Zone Forecast Product
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
765
FPUS55 KTFX 152137
ZFPTFX
Zone Forecast Product for Central and Southwest Montana
National Weather Service Great Falls MT
336 PM MDT Sat Aug 15 2026
Spot temperatures and probabilities of measurable precipitation
are for tonight, Sunday, Sunday night, and Monday.
MTZ301-161000-
East Glacier Park Region-
Including the cities of East Glacier Park, Kiowa, Babb,
Saint Mary, Marias Pass, and Logan Pass
337 PM MDT Sat Aug 15 2026
.TONIGHT...Partly cloudy then becoming mostly cloudy late in the
evening then becoming partly cloudy. Patchy smoke. Lows in the
upper 40s. Southeast winds up to 10 mph shifting to the southwest
after midnight.
.SUNDAY...Mostly sunny. Patchy smoke through the day. A
20 percent chance of thunderstorms in the afternoon. Highs 62 to
72. West winds 5 to 15 mph.
.SUNDAY NIGHT...Mostly cloudy in the evening then becoming partly
cloudy. Patchy smoke. Lows in the upper 40s. Southwest winds up
to 10 mph.
.MONDAY...Partly sunny. Highs 60 to 70. West winds up to 15 mph.
.MONDAY NIGHT...Mostly cloudy. A 20 percent chance of
thunderstorms after midnight. Lows in the upper 40s. West winds
up to 10 mph.
.TUESDAY...Partly sunny. Chance of rain showers and slight chance
of thunderstorms in the afternoon. Highs 60 to 68. Chance of
precipitation 50 percent.
.TUESDAY NIGHT...Partly cloudy. A 20 percent chance of
thunderstorms in the evening. Lows in the upper 40s.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Highs 62 to 76. Lows
around 50.
.FRIDAY NIGHT...Partly cloudy. Slight chance of thunderstorms in
the evening, then slight chance of rain showers after midnight.
Lows in the lower 50s. Chance of precipitation 20 percent.
.SATURDAY...Partly sunny. Slight chance of rain showers in the
morning, then slight chance of thunderstorms in the afternoon.
Highs 63 to 73. Chance of precipitation 20 percent.
$$
MTZ307-161000-
Southern Rocky Mountain Front-
Including the city of Rogers Pass
337 PM MDT Sat Aug 15 2026
.TONIGHT...Mostly cloudy in the evening then becoming partly
cloudy. Patchy smoke in the evening. Slight chance of
thunderstorms in the evening. Chance of rain showers late in the
evening, then slight chance of rain showers after midnight. Lows
43 to 49. Southeast winds up to 5 mph shifting to the southwest
after midnight. Chance of precipitation 50 percent.
.SUNDAY...Partly sunny. A 20 percent chance of thunderstorms in
the afternoon. Highs 64 to 74. West winds up to 10 mph. Gusts up
to 25 mph in the afternoon.
.SUNDAY NIGHT...Partly cloudy. A 20 percent chance of
thunderstorms in the evening. Lows 45 to 51. West winds up to
5 mph. Gusts up to 20 mph in the evening.
.MONDAY...Partly sunny. Highs 63 to 73. West winds up to 10 mph.
Gusts up to 25 mph in the afternoon.
.MONDAY NIGHT...Mostly cloudy. A 20 percent chance of
thunderstorms after midnight. Lows 47 to 53. West winds up to
10 mph. Gusts up to 25 mph in the evening.
.TUESDAY...Mostly sunny. Chance of rain showers and slight chance
of thunderstorms in the afternoon. Highs 61 to 71. Chance of
precipitation 40 percent.
.TUESDAY NIGHT...Partly cloudy. A 20 percent chance of
thunderstorms in the evening. Lows 44 to 50.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Highs 64 to 79. Lows
45 to 54.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. A 20 percent chance
of thunderstorms. Lows 50 to 56. Highs 66 to 76.
$$
MTZ302-161000-
Northern High Plains-
Including the cities of Browning, Heart Butte, and Dupuyer
337 PM MDT Sat Aug 15 2026
.TONIGHT...Partly cloudy then becoming mostly cloudy late in the
evening then becoming partly cloudy. Patchy smoke early in the
evening. Patchy fog late in the night. Lows in the upper 40s.
Southeast winds 5 to 10 mph shifting to the southwest after
midnight.
.SUNDAY...Mostly sunny. Patchy fog in the morning. Patchy smoke
through the day. A 20 percent chance of thunderstorms in the
afternoon. Highs in the mid 70s. West winds up to 10 mph.
.SUNDAY NIGHT...Mostly cloudy in the evening then becoming partly
cloudy. Patchy smoke. Lows in the upper 40s. West winds up to
10 mph.
.MONDAY...Partly sunny. Highs in the lower 70s. West winds up to
10 mph.
.MONDAY NIGHT...Mostly cloudy. Slight chance of rain showers in
the evening, then slight chance of thunderstorms after midnight.
Lows in the upper 40s. West winds up to 10 mph. Chance of
precipitation 20 percent.
.TUESDAY...Partly sunny. Chance of rain showers and slight chance
of thunderstorms in the afternoon. Highs in the lower 70s. Chance
of precipitation 40 percent.
.TUESDAY NIGHT...Partly cloudy. Lows in the upper 40s.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Highs in the upper 70s.
Lows around 50.
.FRIDAY NIGHT...Partly cloudy. Slight chance of thunderstorms in
the evening, then slight chance of rain showers after midnight.
Lows in the lower 50s. Chance of precipitation 20 percent.
.SATURDAY...Mostly sunny. A 20 percent chance of rain showers in
the morning. Highs in the mid 70s.
$$
MTZ308-161000-
Southern High Plains-
Including the cities of Bynum, Choteau, and Pendroy
337 PM MDT Sat Aug 15 2026
.TONIGHT...Patchy smoke in the evening. Mostly cloudy with slight
chance of thunderstorms in the evening, then partly cloudy with
slight chance of rain showers after midnight. Lows around 50.
East winds up to 10 mph shifting to the southwest after midnight.
Chance of precipitation 20 percent.
.SUNDAY...Partly sunny. A 20 percent chance of thunderstorms in
the afternoon. Patchy smoke in the afternoon. Highs in the upper
70s. West winds up to 5 mph.
.SUNDAY NIGHT...Mostly cloudy with a 20 percent chance of
thunderstorms in the evening, then partly cloudy after midnight.
Lows in the lower 50s. West winds up to 5 mph.
.MONDAY...Partly sunny. Highs in the upper 70s. West winds up to
10 mph.
.MONDAY NIGHT...Mostly cloudy. Slight chance of rain showers in
the evening, then slight chance of thunderstorms after midnight.
Lows in the lower 50s. West winds up to 10 mph. Chance of
precipitation 20 percent.
.TUESDAY...Partly sunny. Chance of rain showers and slight chance
of thunderstorms in the afternoon. Highs in the mid 70s. Chance
of precipitation 50 percent.
.TUESDAY NIGHT...Partly cloudy. A 20 percent chance of
thunderstorms in the evening. Lows around 50.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Highs 79 to 84. Lows in
the lower 50s.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. A 20 percent chance
of thunderstorms. Lows in the mid 50s. Highs in the lower 80s.
$$
MTZ303-161000-
Eastern Glacier, Western Toole, and Central Pondera-
Including the cities of Cut Bank, Ethridge, and Santa Rita
337 PM MDT Sat Aug 15 2026
.TONIGHT...Partly cloudy then becoming mostly cloudy late in the
evening then becoming partly cloudy. Patchy fog late in the
night. Lows in the upper 40s. Southeast winds up to 10 mph.
.SUNDAY...Partly sunny. Patchy fog in the morning. Patchy smoke
in the afternoon. A 20 percent chance of thunderstorms in the
afternoon. Highs in the upper 70s. Southwest winds up to 5 mph
shifting to the northwest in the afternoon.
.SUNDAY NIGHT...Mostly cloudy with a 20 percent chance of
thunderstorms in the evening, then partly cloudy after midnight.
Patchy smoke after midnight. Lows in the upper 40s. Northwest
winds up to 5 mph.
.MONDAY...Partly sunny. Highs in the mid 70s. West winds up to
10 mph.
.MONDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening, then slight chance of
thunderstorms after midnight. Lows around 50. Northwest winds up
to 10 mph. Chance of precipitation 40 percent.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. A 20 percent chance
of thunderstorms. Highs in the lower 70s. Lows in the upper 40s.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Highs around 80. Lows
in the lower 50s.
.FRIDAY NIGHT...Partly cloudy. Slight chance of thunderstorms in
the evening, then slight chance of rain showers after midnight.
Lows in the lower 50s. Chance of precipitation 20 percent.
.SATURDAY...Mostly sunny. A 20 percent chance of rain showers in
the morning. Highs in the upper 70s.
&&
TEMPERATURE / PRECIPITATION
Cut Bank 46 77 47 75 / 10 20 20 0
$$
MTZ304-161000-
Eastern Toole and Liberty-
Including the cities of Devon, Shelby, Chester, Galata, Joplin,
Lothair, and Whitlash
337 PM MDT Sat Aug 15 2026
.TONIGHT...Partly cloudy then becoming mostly cloudy in the late
evening and early morning then becoming partly cloudy. A
20 percent chance of rain showers late in the night. Patchy fog
late in the night. Lows in the upper 40s. East winds up to
10 mph.
.SUNDAY...Warmer. Mostly sunny. Patchy fog in the morning. Patchy
smoke in the afternoon. A 20 percent chance of thunderstorms in
the afternoon. Highs 76 to 82. South winds up to 5 mph shifting
to the west in the afternoon.
.SUNDAY NIGHT...Mostly cloudy in the evening then becoming partly
cloudy. A 20 percent chance of thunderstorms. Patchy smoke after
midnight. Lows around 50. Northwest winds up to 10 mph.
.MONDAY...Partly sunny. Highs 74 to 80. East winds up to 5 mph
shifting to the southwest in the afternoon.
.MONDAY NIGHT...Mostly cloudy. Slight chance of thunderstorms in
the evening, then chance of rain showers and slight chance of
thunderstorms after midnight. Lows in the lower 50s. North winds
up to 5 mph. Chance of precipitation 40 percent.
.TUESDAY...Partly sunny with a 20 percent chance of
thunderstorms. Highs 72 to 78.
.TUESDAY NIGHT...Partly cloudy. A 20 percent chance of
thunderstorms in the evening. Lows around 50.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Highs 77 to 86. Lows in
the lower 50s.
.FRIDAY NIGHT...Partly cloudy with a 20 percent chance of rain
showers. Lows in the mid 50s.
.SATURDAY...Mostly sunny. Highs 79 to 85.
$$
MTZ305-161000-
Hill County-
Including the city of Havre
337 PM MDT Sat Aug 15 2026
.TONIGHT...Partly cloudy in the evening, then mostly cloudy with
a 20 percent chance of rain showers after midnight. Patchy fog
late in the night. Lows in the upper 40s. East winds up to
10 mph.
.SUNDAY...Mostly sunny. Patchy fog in the morning. Slight chance
of rain showers in the morning, then slight chance of
thunderstorms in the afternoon. Highs in the lower 80s. Southeast
winds up to 5 mph shifting to the west in the afternoon. Chance
of precipitation 20 percent.
.SUNDAY NIGHT...Mostly cloudy with chance of rain showers and
slight chance of thunderstorms in the evening, then partly cloudy
with slight chance of thunderstorms after midnight. Patchy smoke
through the night. Lows around 50. Northwest winds up to 10 mph.
Chance of precipitation 30 percent.
.MONDAY...Partly sunny. A 20 percent chance of rain showers in
the afternoon. Highs in the upper 70s. Northeast winds up to
5 mph shifting to the southwest in the afternoon.
.MONDAY NIGHT...Mostly cloudy with chance of rain showers and
slight chance of thunderstorms. Lows in the lower 50s. Northeast
winds up to 5 mph. Chance of precipitation 40 percent.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. A 20 percent chance
of thunderstorms. Highs in the upper 70s. Lows around 50.
.WEDNESDAY...Sunny. Highs in the lower 80s.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 50s.
.THURSDAY THROUGH FRIDAY...Mostly clear. Highs in the mid 80s.
Lows in the lower 50s.
.FRIDAY NIGHT...Partly cloudy with a 20 percent chance of rain
showers. Lows in the mid 50s.
.SATURDAY...Mostly sunny. Highs in the mid 80s.
&&
TEMPERATURE / PRECIPITATION
Havre 49 84 50 81 / 30 20 30 10
$$
MTZ306-161000-
Northern Blaine County-
Including the cities of Chinook, Zurich, Harlem, Hogeland,
and Fort Belknap
337 PM MDT Sat Aug 15 2026
.TONIGHT...Partly cloudy in the evening, then mostly cloudy with
a 20 percent chance of rain showers after midnight. Patchy fog
late in the night. Lows around 50. East winds up to 10 mph.
.SUNDAY...Mostly sunny. Patchy fog in the morning. Slight chance
of rain showers in the morning, then slight chance of
thunderstorms in the afternoon. Highs around 80. Southeast winds
up to 10 mph shifting to the west in the afternoon. Chance of
precipitation 20 percent.
.SUNDAY NIGHT...Mostly cloudy with chance of rain showers and
slight chance of thunderstorms in the evening, then partly cloudy
with slight chance of thunderstorms after midnight. Patchy smoke
after midnight. Lows in the lower 50s. Northwest winds up to
10 mph. Chance of precipitation 40 percent.
.MONDAY...Mostly sunny. Highs in the upper 70s. North winds up to
5 mph shifting to the west around 5 mph in the afternoon.
.MONDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening, then slight chance of
thunderstorms after midnight. Lows around 50. North winds around
5 mph shifting to the east up to 5 mph after midnight. Chance of
precipitation 40 percent.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. A 20 percent chance
of thunderstorms. Highs in the mid 70s. Lows around 50.
.WEDNESDAY...Sunny. Highs in the lower 80s.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 50s.
.THURSDAY THROUGH FRIDAY...Mostly clear. Highs in the mid 80s.
Lows in the lower 50s.
.FRIDAY NIGHT...Partly cloudy with a 20 percent chance of rain
showers. Lows in the mid 50s.
.SATURDAY...Mostly sunny. Highs in the mid 80s.
$$
MTZ309-161000-
Eastern Pondera and Eastern Teton-
Including the cities of Brady, Conrad, and Ledger
337 PM MDT Sat Aug 15 2026
.TONIGHT...Partly cloudy then becoming mostly cloudy late in the
evening then becoming partly cloudy. Patchy smoke early in the
evening. Patchy fog late in the night. Lows in the upper 40s.
East winds up to 10 mph shifting to the south after midnight.
.SUNDAY...Partly sunny. Patchy fog in the morning. Patchy smoke
in the afternoon. A 20 percent chance of thunderstorms in the
afternoon. Highs in the lower 80s. West winds up to 5 mph.
.SUNDAY NIGHT...Patchy smoke in the evening. Mostly cloudy with a
20 percent chance of thunderstorms in the evening, then partly
cloudy after midnight. Lows in the upper 40s. North winds up to
5 mph shifting to the west after midnight.
.MONDAY...Partly sunny. Highs in the upper 70s. West winds up to
5 mph.
.MONDAY NIGHT...Mostly cloudy. Slight chance of rain showers in
the evening, then slight chance of thunderstorms after midnight.
Lows in the lower 50s. North winds up to 10 mph shifting to the
southwest after midnight. Chance of precipitation 20 percent.
.TUESDAY...Mostly sunny with a 20 percent chance of
thunderstorms. Highs in the upper 70s.
.TUESDAY NIGHT...Mostly cloudy with chance of rain showers and
slight chance of thunderstorms in the evening, then partly cloudy
after midnight. Lows in the upper 40s. Chance of precipitation
30 percent.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Highs in the mid 80s.
Lows in the lower 50s.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. A 20 percent chance
of thunderstorms. Lows in the mid 50s. Highs in the mid 80s.
$$
MTZ310-161000-
Western and Central Chouteau County-
Including the cities of Floweree, Carter, and Fort Benton
337 PM MDT Sat Aug 15 2026
.TONIGHT...Mostly cloudy in the evening, then partly cloudy with
a 20 percent chance of rain showers after midnight. Patchy fog
late in the night. Lows in the lower 50s. East winds up to 10 mph
shifting to the southeast after midnight.
.SUNDAY...Mostly sunny. Patchy fog in the morning. Patchy smoke
in the afternoon. A 20 percent chance of thunderstorms in the
afternoon. Highs in the lower 80s. Southwest winds up to 5 mph
shifting to the west in the afternoon.
.SUNDAY NIGHT...Mostly cloudy in the evening then becoming partly
cloudy. Patchy smoke in the evening. A 20 percent chance of
thunderstorms. Lows in the lower 50s. Northwest winds up to 5 mph
shifting to the southwest after midnight.
.MONDAY...Partly sunny. Highs in the lower 80s. West winds up to
5 mph.
.MONDAY NIGHT...Mostly cloudy. Slight chance of thunderstorms in
the evening, then chance of rain showers and slight chance of
thunderstorms after midnight. Lows in the lower 50s. North winds
up to 10 mph shifting to the south after midnight. Chance of
precipitation 40 percent.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. A 20 percent chance
of thunderstorms. Highs in the upper 70s. Lows in the lower 50s.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Highs in the mid 80s.
Lows in the mid 50s.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. A 20 percent chance
of thunderstorms. Lows in the upper 50s. Highs in the mid 80s.
$$
MTZ311-161000-
Bears Paw Mountains and Southern Blaine-
Including the city of Rocky Boy
337 PM MDT Sat Aug 15 2026
.TONIGHT...Partly cloudy in the evening, then mostly cloudy with
slight chance of rain showers after midnight. Mostly cloudy with
chance of rain showers late in the night. Lows in the lower 50s.
Southeast winds up to 10 mph. Chance of showers 40 percent.
.SUNDAY...Mostly sunny. Slight chance of rain showers in the
morning, then slight chance of thunderstorms in the afternoon.
Highs 77 to 83. South winds up to 5 mph shifting to the west in
the afternoon. Chance of precipitation 20 percent.
.SUNDAY NIGHT...Patchy smoke in the evening. Mostly cloudy with
chance of rain showers and slight chance of thunderstorms in the
evening, then partly cloudy with slight chance of thunderstorms
after midnight. Lows in the mid 50s. West winds up to 5 mph.
Chance of precipitation 40 percent.
.MONDAY...Partly sunny. A 20 percent chance of thunderstorms in
the afternoon. Highs 75 to 81. West winds up to 10 mph.
.MONDAY NIGHT...Mostly cloudy with chance of rain showers and
slight chance of thunderstorms. Lows in the mid 50s. North winds
up to 10 mph shifting to the southeast after midnight. Chance of
precipitation 40 percent.
.TUESDAY...Partly sunny. Slight chance of thunderstorms in the
morning, then chance of rain showers and slight chance of
thunderstorms in the afternoon. Highs 73 to 79. Chance of
precipitation 50 percent.
.TUESDAY NIGHT...Partly cloudy. A 20 percent chance of
thunderstorms in the evening. Lows in the lower 50s.
.WEDNESDAY...Sunny. Highs 78 to 84.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.THURSDAY THROUGH FRIDAY...Mostly clear. Highs 79 to 88. Lows in
the upper 50s.
.FRIDAY NIGHT...Partly cloudy. Slight chance of thunderstorms in
the evening, then slight chance of rain showers after midnight.
Lows around 60. Chance of precipitation 20 percent.
.SATURDAY...Mostly sunny. Highs 82 to 88.
$$
MTZ312-161000-
Cascade County below 5000ft-
Including the city of Great Falls
337 PM MDT Sat Aug 15 2026
.TONIGHT...Partly cloudy early in the evening, then mostly cloudy
with slight chance of thunderstorms late in the evening. Partly
cloudy with slight chance of rain showers after midnight. Patchy
smoke early in the evening. Patchy fog late in the night. Lows in
the lower 50s. East winds 5 to 10 mph shifting to the south after
midnight. Chance of precipitation 20 percent.
.SUNDAY...Mostly sunny. Patchy fog in the morning. A 20 percent
chance of thunderstorms in the afternoon. Highs in the lower 80s.
West winds up to 10 mph.
.SUNDAY NIGHT...Mostly cloudy with chance of rain showers and
slight chance of thunderstorms in the evening, then partly cloudy
with slight chance of thunderstorms after midnight. Lows in the
lower 50s. North winds up to 10 mph shifting to the southwest
after midnight. Chance of precipitation 40 percent.
.MONDAY...Partly sunny. Highs in the lower 80s. West winds up to
10 mph.
.MONDAY NIGHT...Mostly cloudy. Slight chance of thunderstorms in
the evening, then chance of rain showers and slight chance of
thunderstorms after midnight. Lows in the mid 50s. North winds up
to 10 mph shifting to the southwest after midnight. Chance of
precipitation 30 percent.
.TUESDAY...Mostly sunny. Chance of rain showers and slight chance
of thunderstorms in the afternoon. Highs in the upper 70s. Chance
of precipitation 40 percent.
.TUESDAY NIGHT...Partly cloudy. A 20 percent chance of
thunderstorms in the evening. Lows in the lower 50s.
.WEDNESDAY...Sunny. Highs in the lower 80s.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 50s.
.THURSDAY THROUGH FRIDAY...Mostly clear. Highs in the mid 80s.
Lows in the mid 50s.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. A 20 percent chance
of thunderstorms. Lows in the upper 50s. Highs in the mid 80s.
&&
TEMPERATURE / PRECIPITATION
Great Falls Arpt 51 83 52 82 / 20 30 30 0
$$
MTZ313-161000-
Judith Basin County and Judith Gap-
Including the cities of Raynesford, Geyser, Stanford, Windham,
Benchland, Hobson, and Moccasin
337 PM MDT Sat Aug 15 2026
.TONIGHT...Mostly cloudy. Chance of thunderstorms early in the
evening, then chance of rain showers in the late evening and
overnight. Lows around 50. Southeast winds 5 to 10 mph shifting
to the southwest after midnight. Chance of precipitation
50 percent.
.SUNDAY...Partly sunny. A 20 percent chance of thunderstorms in
the afternoon. Highs in the upper 70s. Southwest winds up to
5 mph shifting to the northwest in the afternoon.
.SUNDAY NIGHT...Mostly cloudy with chance of rain showers and
slight chance of thunderstorms in the evening, then partly cloudy
with slight chance of thunderstorms after midnight. Lows in the
lower 50s. West winds up to 5 mph. Chance of precipitation
40 percent.
.MONDAY...Partly sunny. Chance of rain showers and slight chance
of thunderstorms in the afternoon. Highs in the upper 70s.
Southwest winds up to 5 mph shifting to the northwest in the
afternoon. Chance of precipitation 40 percent.
.MONDAY NIGHT...Mostly cloudy with chance of rain showers and
slight chance of thunderstorms. Lows in the lower 50s. Northwest
winds 5 to 10 mph shifting to the southwest after midnight.
Chance of precipitation 40 percent.
.TUESDAY...Partly sunny. Slight chance of thunderstorms in the
morning, then chance of thunderstorms in the afternoon. Highs in
the mid 70s. Chance of thunderstorms 50 percent.
.TUESDAY NIGHT...Partly cloudy. A 20 percent chance of
thunderstorms in the evening. Lows around 50.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Highs 80 to 85. Lows in
the lower 50s.
.FRIDAY NIGHT...Partly cloudy. Slight chance of thunderstorms in
the evening, then slight chance of rain showers after midnight.
Lows in the mid 50s. Chance of precipitation 20 percent.
.SATURDAY...Mostly sunny. Chance of rain showers and slight
chance of thunderstorms in the afternoon. Highs in the mid 80s.
Chance of precipitation 30 percent.
$$
MTZ314-161000-
Fergus County below 4500ft-
Including the cities of Hilger and Lewistown
337 PM MDT Sat Aug 15 2026
.TONIGHT...Partly cloudy early in the evening then becoming
mostly cloudy. Slight chance of thunderstorms early in the
evening. Slight chance of rain showers late in the evening, then
chance of rain showers after midnight. Patchy fog late in the
night. Lows 50 to 56. Southeast winds up to 10 mph. Chance of
precipitation 50 percent.
.SUNDAY...Mostly sunny. Slight chance of rain showers in the
morning, then chance of rain showers and slight chance of
thunderstorms in the afternoon. Highs in the lower 80s. Southwest
winds up to 5 mph shifting to the northwest in the afternoon.
Chance of precipitation 40 percent.
.SUNDAY NIGHT...Mostly cloudy. Patchy smoke in the evening.
Chance of rain showers and slight chance of thunderstorms in the
evening, then slight chance of thunderstorms after midnight. Lows
52 to 58. West winds up to 10 mph. Chance of precipitation
50 percent.
.MONDAY...Partly sunny. A 20 percent chance of thunderstorms in
the afternoon. Highs around 80. West winds up to 5 mph shifting
to the northwest in the afternoon.
.MONDAY NIGHT...Mostly cloudy with chance of rain showers and
slight chance of thunderstorms. Lows 52 to 58. North winds up to
5 mph shifting to the southwest after midnight. Chance of
precipitation 50 percent.
.TUESDAY...Partly sunny. Slight chance of thunderstorms in the
morning, then chance of rain showers and slight chance of
thunderstorms in the afternoon. Highs in the upper 70s. Chance of
precipitation 50 percent.
.TUESDAY NIGHT...Partly cloudy. A 20 percent chance of
thunderstorms in the evening. Lows 50 to 56.
.WEDNESDAY...Sunny. Highs in the lower 80s.
.WEDNESDAY NIGHT...Partly cloudy. Lows 52 to 58.
.THURSDAY THROUGH FRIDAY...Mostly clear. Highs in the mid 80s.
Lows 53 to 59.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. A 20 percent chance
of thunderstorms. Lows 56 to 62. Highs in the upper 80s.
&&
TEMPERATURE / PRECIPITATION
Lewistown 48 79 49 78 / 50 30 30 20
$$
MTZ315-161000-
Upper Blackfoot and MacDonald Pass-
Including the cities of Marysville, Lincoln, Flesher Pass,
and MacDonald Pass
337 PM MDT Sat Aug 15 2026
.TONIGHT...Mostly cloudy in the evening then becoming partly
cloudy. Patchy smoke early in the evening. Patchy fog late in the
night. Chance of thunderstorms early in the evening, then chance
of rain showers and slight chance of thunderstorms late in the
evening. Slight chance of rain showers after midnight. Lows 44 to
52. West winds up to 5 mph. Chance of precipitation 50 percent.
.SUNDAY...Partly sunny. A 20 percent chance of thunderstorms in
the afternoon. Highs 69 to 77. West winds up to 10 mph.
.SUNDAY NIGHT...Mostly cloudy. A 20 percent chance of
thunderstorms in the evening. Lows 46 to 54. West winds up to
10 mph.
.MONDAY...Partly sunny. Highs 69 to 77. West winds up to 10 mph.
Gusts up to 25 mph in the afternoon.
.MONDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms after midnight. Lows 48 to 56. West winds
up to 10 mph. Chance of precipitation 50 percent.
.TUESDAY...Mostly sunny. Chance of rain showers and slight chance
of thunderstorms in the afternoon. Highs 66 to 74. Chance of
precipitation 40 percent.
.TUESDAY NIGHT...Partly cloudy. A 20 percent chance of
thunderstorms in the evening. Lows 45 to 53.
.WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy. Highs 68 to 76.
Lows 46 to 54.
.THURSDAY THROUGH FRIDAY...Mostly clear. Highs 70 to 82. Lows
49 to 57.
.FRIDAY NIGHT...Partly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening. Lows 51 to 59. Chance of
precipitation 30 percent.
.SATURDAY...Mostly sunny. Slight chance of rain showers in the
morning, then slight chance of thunderstorms in the afternoon.
Highs 71 to 79. Chance of precipitation 20 percent.
$$
MTZ316-161000-
Gates of the Mountains-
Including the cities of Canyon Creek, Wolf Creek, and Craig
337 PM MDT Sat Aug 15 2026
.TONIGHT...Patchy smoke early in the evening. Mostly cloudy with
chance of rain showers and slight chance of thunderstorms in the
evening, then partly cloudy with slight chance of rain showers
after midnight. Lows in the lower 50s. East winds up to 10 mph
shifting to the southwest after midnight. Chance of precipitation
50 percent.
.SUNDAY...Mostly sunny. A 20 percent chance of thunderstorms in
the afternoon. Highs 75 to 83. Southwest winds up to 10 mph.
.SUNDAY NIGHT...Mostly cloudy with chance of rain showers and
slight chance of thunderstorms in the evening, then partly cloudy
with slight chance of thunderstorms after midnight. Lows in the
lower 50s. Southwest winds up to 5 mph. Chance of precipitation
40 percent.
.MONDAY...Partly sunny. Highs 74 to 82. Southwest winds up to
10 mph.
.MONDAY NIGHT...Mostly cloudy. Slight chance of thunderstorms in
the evening, then chance of rain showers and slight chance of
thunderstorms after midnight. Lows in the mid 50s. West winds up
to 10 mph shifting to the southwest after midnight. Chance of
precipitation 40 percent.
.TUESDAY...Mostly sunny. Chance of rain showers and slight chance
of thunderstorms in the afternoon. Highs 71 to 79. Chance of
precipitation 40 percent.
.TUESDAY NIGHT...Partly cloudy. A 20 percent chance of
thunderstorms in the evening. Lows in the lower 50s.
.WEDNESDAY...Sunny. Highs 74 to 82.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 50s.
.THURSDAY THROUGH FRIDAY...Mostly clear. Highs 77 to 88. Lows in
the mid 50s.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. A 20 percent chance
of thunderstorms. Lows in the upper 50s. Highs 78 to 86.
$$
MTZ317-161000-
Little Belt and Highwood Mountains-
Including the cities of Monarch, Neihart, and Kings Hill Pass
337 PM MDT Sat Aug 15 2026
.TONIGHT...Mostly cloudy until early morning then becoming partly
cloudy. Chance of thunderstorms early in the evening, then slight
chance of thunderstorms late in the evening. Chance of rain
showers in the late evening and overnight. Lows 47 to 53.
Southeast winds up to 10 mph shifting to the south after
midnight. Chance of precipitation 50 percent.
.SUNDAY...Mostly sunny. A 20 percent chance of thunderstorms in
the afternoon. Highs 68 to 76. West winds up to 10 mph. Gusts up
to 30 mph in the afternoon.
.SUNDAY NIGHT...Mostly cloudy with a 20 percent chance of
thunderstorms. Lows 48 to 54. Southwest winds up to 10 mph. Gusts
up to 25 mph in the evening.
.MONDAY...Partly sunny. A 20 percent chance of thunderstorms in
the afternoon. Highs 68 to 76. Southwest winds up to 10 mph.
Gusts up to 30 mph in the afternoon.
.MONDAY NIGHT...Mostly cloudy with chance of rain showers and
slight chance of thunderstorms. Lows 49 to 55. Northwest winds up
to 10 mph with gusts to around 30 mph shifting to the southwest
after midnight. Chance of precipitation 40 percent.
.TUESDAY...Partly sunny. Slight chance of thunderstorms in the
morning, then chance of thunderstorms in the afternoon. Highs
64 to 72. Chance of thunderstorms 50 percent.
.TUESDAY NIGHT...Partly cloudy. A 20 percent chance of
thunderstorms in the evening. Lows 45 to 53.
.WEDNESDAY THROUGH THURSDAY NIGHT...Mostly clear. Highs 68 to 78.
Lows 48 to 57.
.FRIDAY...Sunny. Highs 74 to 82.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. A 20 percent chance
of thunderstorms. Lows 52 to 60. Highs 73 to 81.
$$
MTZ318-161000-
Snowy and Judith Mountains-
337 PM MDT Sat Aug 15 2026
.TONIGHT...Mostly cloudy. Chance of thunderstorms early in the
evening, then slight chance of thunderstorms late in the evening.
Chance of rain showers in the late evening and overnight. Patchy
fog late in the night. Lows 47 to 53. South winds up to 10 mph.
Chance of precipitation 50 percent.
.SUNDAY...Partly sunny. Chance of rain showers in the morning,
then slight chance of thunderstorms in the afternoon. Highs 70 to
76. West winds up to 10 mph. Chance of precipitation 40 percent.
.SUNDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening, then slight chance of
thunderstorms after midnight. Lows 49 to 55. Northwest winds up
to 5 mph shifting to the southwest after midnight. Chance of
precipitation 40 percent.
.MONDAY...Partly sunny. Chance of rain showers and slight chance
of thunderstorms in the afternoon. Highs 69 to 75. West winds up
to 10 mph. Chance of precipitation 50 percent.
.MONDAY NIGHT...Mostly cloudy with chance of rain showers and
slight chance of thunderstorms. Lows 49 to 55. Northwest winds
5 to 10 mph shifting to the southwest after midnight. Chance of
precipitation 40 percent.
.TUESDAY...Partly sunny. Slight chance of thunderstorms in the
morning, then rain showers likely and slight chance of
thunderstorms in the afternoon. Highs 66 to 72. Chance of
precipitation 70 percent.
.TUESDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening. Lows 47 to 53. Chance of
precipitation 40 percent.
.WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy. Highs 71 to 77.
Lows 49 to 55.
.THURSDAY THROUGH FRIDAY...Mostly clear. Highs 72 to 82. Lows
51 to 57.
.FRIDAY NIGHT...Partly cloudy. Slight chance of thunderstorms in
the evening, then slight chance of rain showers after midnight.
Lows 54 to 60. Chance of precipitation 20 percent.
.SATURDAY...Mostly sunny. Slight chance of rain showers in the
morning, then chance of rain showers and slight chance of
thunderstorms in the afternoon. Highs 76 to 84. Chance of
precipitation 30 percent.
$$
MTZ319-161000-
Helena Valley-
Including the city of Helena
337 PM MDT Sat Aug 15 2026
.TONIGHT...Mostly cloudy in the evening then becoming partly
cloudy. Patchy smoke early in the evening. Patchy fog late in the
night. Chance of thunderstorms early in the evening, then rain
showers likely and slight chance of thunderstorms late in the
evening. Slight chance of rain showers after midnight. Lows in
the upper 40s. South winds up to 5 mph. Chance of precipitation
70 percent.
.SUNDAY...Mostly sunny. Patchy fog in the morning. A 20 percent
chance of thunderstorms in the afternoon. Highs in the lower 80s.
Southeast winds up to 10 mph.
.SUNDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening. Lows around 50. Northwest
winds up to 5 mph shifting to the southwest after midnight.
Chance of precipitation 30 percent.
.MONDAY...Partly sunny. Highs in the lower 80s. South winds up to
5 mph shifting to the west in the afternoon.
.MONDAY NIGHT...Mostly cloudy. Slight chance of thunderstorms in
the evening, then chance of rain showers and slight chance of
thunderstorms after midnight. Lows in the lower 50s. West winds
5 to 10 mph shifting to the southwest after midnight. Chance of
precipitation 50 percent.
.TUESDAY...Mostly sunny. A 40 percent chance of thunderstorms in
the afternoon. Highs in the upper 70s.
.TUESDAY NIGHT...Mostly cloudy with chance of rain showers and
slight chance of thunderstorms in the evening, then partly cloudy
after midnight. Lows in the upper 40s. Chance of precipitation
30 percent.
.WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy. Highs in the
lower 80s. Lows around 50.
.THURSDAY THROUGH FRIDAY...Mostly clear. Highs in the mid 80s.
Lows in the lower 50s.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. Chance of rain
showers and slight chance of thunderstorms. Lows in the mid 50s.
Highs in the mid 80s. Chance of precipitation 30 percent.
&&
TEMPERATURE / PRECIPITATION
Helena 50 82 53 82 / 80 20 30 10
$$
MTZ320-161000-
Big Belt, Bridger and Castle Mountains-
Including the cities of Trident, Maudlow, Battle Ridge Pass,
Bozeman Pass, and Deep Creek Pass
337 PM MDT Sat Aug 15 2026
.TONIGHT...Mostly cloudy in the evening then becoming partly
cloudy. Chance of thunderstorms early in the evening, then chance
of rain showers and slight chance of thunderstorms late in the
evening. Slight chance of rain showers after midnight. Lows
around 50. Southwest winds up to 10 mph. Chance of precipitation
50 percent.
.SUNDAY...Mostly sunny. A 20 percent chance of thunderstorms in
the afternoon. Highs 67 to 75. Southwest winds up to 10 mph.
Gusts up to 30 mph in the afternoon.
.SUNDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening, then slight chance of
thunderstorms after midnight. Lows in the lower 50s. West winds
up to 10 mph with gusts to around 25 mph shifting to the south
after midnight. Chance of precipitation 40 percent.
.MONDAY...Partly sunny. Highs 68 to 76. Southwest winds up to
10 mph. Gusts up to 35 mph in the afternoon.
.MONDAY NIGHT...Mostly cloudy with chance of rain showers and
slight chance of thunderstorms. Lows in the lower 50s. West winds
up to 10 mph with gusts to around 30 mph shifting to the south
after midnight. Chance of precipitation 50 percent.
.TUESDAY...Partly sunny with chance of rain showers and slight
chance of thunderstorms. Highs 64 to 74. Chance of precipitation
50 percent.
.TUESDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening. Lows around 50. Chance of
precipitation 40 percent.
.WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy. Highs 67 to 75.
Lows in the lower 50s.
.THURSDAY...Sunny. Highs 69 to 79.
.THURSDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.FRIDAY...Sunny. Highs 73 to 83.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. A 20 percent chance
of thunderstorms. Lows in the mid 50s. Highs 72 to 82.
$$
MTZ321-161000-
Meagher County Valleys-
Including the cities of Martinsdale, Checkerboard, Ringling,
and White Sulphur Springs
337 PM MDT Sat Aug 15 2026
.TONIGHT...Mostly cloudy in the evening then becoming partly
cloudy. Chance of thunderstorms early in the evening, then chance
of rain showers and slight chance of thunderstorms late in the
evening. Slight chance of rain showers after midnight. Patchy fog
late in the night. Lows in the upper 40s. East winds up to 10 mph
shifting to the south after midnight. Chance of precipitation
50 percent.
.SUNDAY...Mostly sunny. Patchy fog in the morning. A 20 percent
chance of thunderstorms in the afternoon. Highs in the mid 70s.
Southwest winds up to 5 mph with gusts to around 20 mph shifting
to the west 5 to 15 mph with gusts to around 30 mph in the
afternoon.
.SUNDAY NIGHT...Mostly cloudy. A 20 percent chance of
thunderstorms in the evening. Lows in the upper 40s. West winds
up to 10 mph with gusts to around 25 mph shifting to the south
after midnight.
.MONDAY...Partly sunny. Highs in the mid 70s. South winds up to
5 mph shifting to the west 5 to 15 mph with gusts to around
30 mph in the afternoon.
.MONDAY NIGHT...Mostly cloudy with chance of rain showers and
slight chance of thunderstorms. Lows around 50. West winds 5 to
10 mph with gusts to around 30 mph shifting to the south after
midnight. Chance of precipitation 50 percent.
.TUESDAY...Partly sunny. Slight chance of thunderstorms in the
morning, then chance of thunderstorms in the afternoon. Highs in
the lower 70s. Chance of thunderstorms 50 percent.
.TUESDAY NIGHT...Partly cloudy with a 20 percent chance of
thunderstorms in the evening, then mostly cloudy after midnight.
Lows in the mid 40s.
.WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy. Highs in the mid
70s. Lows in the upper 40s.
.THURSDAY...Sunny. Highs in the upper 70s.
.THURSDAY NIGHT...Partly cloudy. Lows around 50.
.FRIDAY...Sunny. Highs in the lower 80s.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. A 20 percent chance
of thunderstorms. Lows in the lower 50s. Highs in the lower 80s.
$$
MTZ322-161000-
Elkhorn and Boulder Mountains-
Including the cities of Montana City, Clancy, Boulder, Corbin,
Wickes, Elk Park Pass, and Homestake Pass
337 PM MDT Sat Aug 15 2026
.TONIGHT...Mostly cloudy in the evening then becoming partly
cloudy. Chance of thunderstorms early in the evening, then chance
of rain showers and slight chance of thunderstorms late in the
evening. Slight chance of rain showers after midnight. Lows 44 to
52. Southwest winds up to 10 mph. Chance of precipitation
50 percent.
.SUNDAY...Partly sunny. A 40 percent chance of thunderstorms in
the afternoon. Highs 67 to 77. West winds up to 10 mph.
.SUNDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening, then slight chance of
thunderstorms after midnight. Lows 46 to 54. West winds up to
10 mph. Chance of precipitation 40 percent.
.MONDAY...Partly sunny. A 20 percent chance of thunderstorms in
the afternoon. Highs 68 to 76. West winds up to 10 mph.
.MONDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening, then rain showers likely
and slight chance of thunderstorms after midnight. Lows 47 to 55.
West winds up to 10 mph. Chance of precipitation 70 percent.
.TUESDAY...Partly sunny. Slight chance of thunderstorms in the
morning, then chance of thunderstorms in the afternoon. Highs
65 to 73. Chance of thunderstorms 50 percent.
.TUESDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening. Lows 45 to 53. Chance of
precipitation 30 percent.
.WEDNESDAY...Mostly sunny. A 20 percent chance of thunderstorms
in the afternoon. Highs 67 to 75.
.WEDNESDAY NIGHT...Partly cloudy. Lows 46 to 54.
.THURSDAY...Sunny. Highs 71 to 79.
.THURSDAY NIGHT...Partly cloudy. Lows 49 to 57.
.FRIDAY...Sunny. Highs 74 to 82.
.FRIDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening, then slight chance of
rain showers after midnight. Lows 51 to 59. Chance of
precipitation 30 percent.
.SATURDAY...Mostly sunny. Slight chance of rain showers in the
morning, then chance of thunderstorms in the afternoon. Highs
72 to 80. Chance of precipitation 30 percent.
$$
MTZ323-161000-
Canyon Ferry Area-
Including the cities of Toston, Townsend, and Winston
337 PM MDT Sat Aug 15 2026
.TONIGHT...Mostly cloudy in the evening then becoming partly
cloudy. Chance of thunderstorms early in the evening, then chance
of rain showers and slight chance of thunderstorms late in the
evening. Slight chance of rain showers after midnight. Patchy fog
late in the night. Lows 48 to 54. Southwest winds up to 10 mph
shifting to the south after midnight. Chance of precipitation
50 percent.
.SUNDAY...Mostly sunny. Patchy fog in the morning. A 20 percent
chance of thunderstorms in the afternoon. Highs in the upper 70s.
South winds up to 10 mph shifting to the west in the afternoon.
.SUNDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening, then slight chance of
thunderstorms after midnight. Lows 50 to 56. North winds up to
5 mph shifting to the south after midnight. Chance of
precipitation 40 percent.
.MONDAY...Partly sunny. Highs in the upper 70s. South winds up to
5 mph shifting to the southwest in the afternoon.
.MONDAY NIGHT...Mostly cloudy. Rain showers likely and slight
chance of thunderstorms in the evening, then chance of rain
showers and slight chance of thunderstorms after midnight. Lows
in the mid 50s. Northwest winds 5 to 10 mph shifting to the south
after midnight. Chance of precipitation 60 percent.
.TUESDAY...Partly sunny. Slight chance of thunderstorms in the
morning, then chance of thunderstorms in the afternoon. Highs in
the mid 70s. Chance of thunderstorms 50 percent.
.TUESDAY NIGHT...Mostly cloudy. A 20 percent chance of
thunderstorms in the evening. Lows 48 to 54.
.WEDNESDAY...Mostly sunny. A 20 percent chance of thunderstorms
in the afternoon. Highs in the upper 70s.
.WEDNESDAY NIGHT...Partly cloudy. Lows 49 to 55.
.THURSDAY...Sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Partly cloudy. Lows 52 to 58.
.FRIDAY...Sunny. Highs in the mid 80s.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. A 20 percent chance
of thunderstorms. Lows 54 to 60. Highs in the lower 80s.
$$
MTZ324-161000-
Missouri Headwaters-
Including the cities of Harrison, Three Forks, Willow Creek,
Pony, and Whitehall
337 PM MDT Sat Aug 15 2026
.TONIGHT...Mostly cloudy in the evening then becoming partly
cloudy. Rain showers likely and chance of thunderstorms early in
the evening, then slight chance of thunderstorms late in the
evening. Slight chance of rain showers after midnight. Patchy fog
late in the night. Lows in the upper 40s. West winds up to 5 mph.
Chance of precipitation 70 percent.
.SUNDAY...Mostly sunny. Patchy fog in the morning. Chance of rain
showers and slight chance of thunderstorms in the afternoon.
Highs in the upper 70s. Southwest winds up to 5 mph shifting to
the west in the afternoon. Chance of precipitation 40 percent.
.SUNDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening, then slight chance of
thunderstorms after midnight. Lows around 50. Northwest winds up
to 5 mph shifting to the southwest after midnight. Chance of
precipitation 40 percent.
.MONDAY...Partly sunny. Highs in the upper 70s. Southwest winds
up to 10 mph.
.MONDAY NIGHT...Rain showers likely and slight chance of
thunderstorms. Lows in the lower 50s. West winds up to 10 mph.
Chance of precipitation 70 percent.
.TUESDAY...Partly sunny. Slight chance of thunderstorms in the
morning, then chance of thunderstorms in the afternoon. Highs in
the upper 70s. Chance of thunderstorms 50 percent.
.TUESDAY NIGHT...Mostly cloudy. A 20 percent chance of
thunderstorms in the evening. Lows in the upper 40s.
.WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy. Highs in the
upper 70s. Lows around 50.
.THURSDAY...Sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Partly cloudy. Lows in the lower 50s.
.FRIDAY...Sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy with slight chance of thunderstorms
in the evening, then mostly cloudy with slight chance of rain
showers after midnight. Lows in the mid 50s. Chance of
precipitation 20 percent.
.SATURDAY...Mostly sunny. A 20 percent chance of thunderstorms in
the afternoon. Highs in the mid 80s.
$$
MTZ325-161000-
Madison River Valley-
Including the cities of Cameron, Ennis, Jeffers, McAllister,
and Norris
337 PM MDT Sat Aug 15 2026
.TONIGHT...Mostly cloudy until early morning then becoming partly
cloudy. Chance of thunderstorms early in the evening, then slight
chance of thunderstorms late in the evening. Slight chance of
rain showers after midnight. Patchy fog late in the night. Lows
43 to 49. South winds up to 10 mph. Chance of precipitation
50 percent.
.SUNDAY...Mostly sunny. Patchy fog in the morning. A 40 percent
chance of thunderstorms in the afternoon. Highs in the upper 70s.
South winds up to 10 mph.
.SUNDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening, then slight chance of
thunderstorms after midnight. Lows 46 to 52. South winds up to
10 mph. Chance of precipitation 40 percent.
.MONDAY...Partly sunny. A 20 percent chance of thunderstorms in
the afternoon. Highs in the upper 70s. South winds up to 10 mph
shifting to the southwest in the afternoon.
.MONDAY NIGHT...Rain showers likely and slight chance of
thunderstorms. Lows 47 to 53. South winds up to 10 mph. Chance of
precipitation 70 percent.
.TUESDAY...Partly sunny. Chance of rain showers and slight chance
of thunderstorms in the morning, then chance of thunderstorms in
the afternoon. Highs in the mid 70s. Chance of precipitation
50 percent.
.TUESDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening. Lows 44 to 50. Chance of
precipitation 40 percent.
.WEDNESDAY...Mostly sunny. Highs in the upper 70s.
.WEDNESDAY NIGHT...Partly cloudy. A 20 percent chance of rain
showers in the evening. Lows 46 to 52.
.THURSDAY...Sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Partly cloudy. Lows 49 to 55.
.FRIDAY...Mostly sunny. A 20 percent chance of thunderstorms in
the afternoon. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy with slight chance of thunderstorms
in the evening, then mostly cloudy with slight chance of rain
showers after midnight. Lows 51 to 57. Chance of precipitation
20 percent.
.SATURDAY...Mostly sunny. Slight chance of rain showers in the
morning, then chance of thunderstorms in the afternoon. Highs in
the mid 80s. Chance of precipitation 30 percent.
$$
MTZ326-161000-
Gallatin Valley-
Including the cities of Bozeman and Gallatin Gateway
337 PM MDT Sat Aug 15 2026
.TONIGHT...Mostly cloudy in the evening then becoming partly
cloudy. Chance of thunderstorms early in the evening, then chance
of rain showers and slight chance of thunderstorms late in the
evening. Slight chance of rain showers after midnight. Patchy fog
late in the night. Lows in the upper 40s. South winds up to
5 mph. Chance of precipitation 50 percent.
.SUNDAY...Mostly sunny. Patchy fog in the morning. Chance of rain
showers and slight chance of thunderstorms in the afternoon.
Highs in the upper 70s. Southeast winds up to 5 mph shifting to
the northwest in the afternoon. Chance of precipitation
40 percent.
.SUNDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening, then slight chance of
thunderstorms after midnight. Lows around 50. Southeast winds up
to 5 mph. Chance of precipitation 40 percent.
.MONDAY...Partly sunny. Highs in the upper 70s. South winds up to
5 mph shifting to the west with gusts to around 20 mph in the
afternoon.
.MONDAY NIGHT...Mostly cloudy. Rain showers likely and slight
chance of thunderstorms in the evening, then chance of rain
showers and slight chance of thunderstorms after midnight. Lows
in the lower 50s. West winds 5 to 10 mph shifting to the south
after midnight. Chance of precipitation 70 percent.
.TUESDAY...Partly sunny. Chance of rain showers and slight chance
of thunderstorms in the morning, then chance of thunderstorms in
the afternoon. Highs in the upper 70s. Chance of precipitation
50 percent.
.TUESDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening. Lows in the upper 40s.
Chance of precipitation 40 percent.
.WEDNESDAY...Mostly sunny. Highs in the upper 70s.
.WEDNESDAY NIGHT...Partly cloudy. A 20 percent chance of rain
showers in the evening. Lows around 50.
.THURSDAY...Sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Partly cloudy. Lows in the lower 50s.
.FRIDAY...Sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy with slight chance of thunderstorms
in the evening, then mostly cloudy with slight chance of rain
showers after midnight. Lows in the mid 50s. Chance of
precipitation 20 percent.
.SATURDAY...Mostly sunny. Slight chance of rain showers in the
morning, then chance of rain showers and slight chance of
thunderstorms in the afternoon. Highs in the mid 80s. Chance of
precipitation 30 percent.
&&
TEMPERATURE / PRECIPITATION
Bozeman Airport 47 79 48 81 / 60 30 40 0
Bozeman MSU 48 78 51 79 / 50 30 40 0
$$
MTZ330-161000-
Gallatin and Madison County Mountains and Centennial Mountains-
Including the cities of Big Sky, West Yellowstone, Targhee Pass,
and Raynolds Pass
337 PM MDT Sat Aug 15 2026
.TONIGHT...Mostly cloudy in the evening then becoming partly
cloudy. Chance of thunderstorms early in the evening, then slight
chance of thunderstorms late in the evening. Slight chance of
rain showers after midnight. Patchy fog late in the night. Lows
40 to 48. Southwest winds up to 10 mph. Chance of precipitation
50 percent.
.SUNDAY...Partly sunny. Chance of rain showers and slight chance
of thunderstorms in the afternoon. Highs 63 to 73. Southwest
winds up to 10 mph. Chance of precipitation 40 percent.
.SUNDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening, then slight chance of
thunderstorms after midnight. Lows 42 to 50. Southwest winds up
to 10 mph. Chance of precipitation 40 percent.
.MONDAY...Partly sunny. A 20 percent chance of thunderstorms in
the afternoon. Highs 64 to 74. South winds up to 10 mph shifting
to the southwest in the afternoon. Gusts up to 25 mph.
.MONDAY NIGHT...Rain showers likely and slight chance of
thunderstorms. Lows 44 to 52. West winds 5 to 10 mph shifting to
the south after midnight. Chance of precipitation 70 percent.
.TUESDAY...Partly sunny. Chance of rain showers and slight chance
of thunderstorms in the morning, then chance of thunderstorms in
the afternoon. Highs 61 to 71. Chance of precipitation
50 percent.
.TUESDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening. Lows 41 to 49. Chance of
precipitation 50 percent.
.WEDNESDAY...Mostly sunny. Highs 63 to 73.
.WEDNESDAY NIGHT...Partly cloudy. A 20 percent chance of rain
showers in the evening. Lows 43 to 51.
.THURSDAY...Sunny. Highs 66 to 76.
.THURSDAY NIGHT...Partly cloudy. Lows 46 to 54.
.FRIDAY...Mostly sunny. A 20 percent chance of thunderstorms in
the afternoon. Highs 70 to 80.
.FRIDAY NIGHT...Partly cloudy with slight chance of thunderstorms
in the evening, then mostly cloudy with slight chance of rain
showers after midnight. Lows 48 to 56. Chance of precipitation
20 percent.
.SATURDAY...Partly sunny. Slight chance of rain showers in the
morning, then chance of thunderstorms in the afternoon. Highs
69 to 79. Chance of precipitation 40 percent.
&&
TEMPERATURE / PRECIPITATION
West Yellowstone 34 75 35 76 / 80 20 20 10
$$
MTZ327-161000-
Northwest Beaverhead County-
Including the cities of Dewey, Wisdom, Wise River, Big Hole Pass,
and Chief Joseph Pass
337 PM MDT Sat Aug 15 2026
.TONIGHT...Mostly cloudy with chance of thunderstorms early in
the evening, then partly cloudy with slight chance of rain
showers in the late evening and early morning. Partly cloudy late
in the night. Patchy fog late in the night. Lows 37 to 47. South
winds up to 10 mph. Chance of precipitation 50 percent.
.SUNDAY...Partly sunny. Patchy fog in the morning. A 20 percent
chance of thunderstorms in the afternoon. Highs 64 to 74.
Southwest winds up to 10 mph.
.SUNDAY NIGHT...Mostly cloudy. A 20 percent chance of
thunderstorms in the evening. Lows 40 to 50. Northwest winds up
to 10 mph shifting to the south after midnight.
.MONDAY...Partly sunny. Highs 66 to 76. Southwest winds up to
10 mph. Gusts up to 25 mph in the afternoon.
.MONDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening, then rain showers likely
and slight chance of thunderstorms after midnight. Lows 41 to 51.
Northwest winds up to 10 mph shifting to the southwest after
midnight. Chance of precipitation 60 percent.
.TUESDAY...Partly sunny. A 50 percent chance of thunderstorms in
the afternoon. Highs 63 to 73.
.TUESDAY NIGHT...Mostly cloudy with a 20 percent chance of
thunderstorms in the evening, then partly cloudy after midnight.
Lows 38 to 48.
.WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy. Highs 64 to 74.
Lows 40 to 50.
.THURSDAY...Sunny. Highs 68 to 78.
.THURSDAY NIGHT...Partly cloudy. Lows 43 to 53.
.FRIDAY...Mostly sunny. A 20 percent chance of thunderstorms in
the afternoon. Highs 71 to 81.
.FRIDAY NIGHT...Mostly cloudy with chance of rain showers and
slight chance of thunderstorms in the evening, then partly cloudy
after midnight. Lows 45 to 55. Chance of precipitation
30 percent.
.SATURDAY...Partly sunny. Slight chance of rain showers in the
morning, then chance of thunderstorms in the afternoon. Highs
69 to 79. Chance of precipitation 40 percent.
$$
MTZ328-161000-
Beaverhead and Western Madison below 6000ft-
Including the cities of Bannack, Dillon, Glen, and Waterloo
337 PM MDT Sat Aug 15 2026
.TONIGHT...Mostly cloudy with chance of thunderstorms early in
the evening, then mostly cloudy with slight chance of rain
showers in the late evening and early morning. Partly cloudy late
in the night. Patchy fog late in the night. Lows in the mid 40s.
South winds up to 10 mph. Chance of precipitation 50 percent.
.SUNDAY...Partly sunny. Patchy fog in the morning. A 20 percent
chance of thunderstorms in the afternoon. Highs 72 to 78.
Southwest winds up to 10 mph.
.SUNDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening, then slight chance of
thunderstorms after midnight. Lows in the upper 40s. Southwest
winds up to 5 mph. Chance of precipitation 40 percent.
.MONDAY...Partly sunny. Highs 74 to 80. Southwest winds up to
10 mph.
.MONDAY NIGHT...Mostly cloudy with chance of rain showers and
slight chance of thunderstorms. Lows around 50. Northwest winds
5 to 10 mph shifting to the southwest after midnight. Chance of
precipitation 50 percent.
.TUESDAY...Partly sunny. A 50 percent chance of thunderstorms in
the afternoon. Highs 72 to 78.
.TUESDAY NIGHT...Mostly cloudy with a 20 percent chance of
thunderstorms in the evening, then partly cloudy after midnight.
Lows in the upper 40s.
.WEDNESDAY AND WEDNESDAY NIGHT...Partly cloudy. Highs 73 to 79.
Lows in the upper 40s.
.THURSDAY...Sunny. Highs 76 to 82.
.THURSDAY NIGHT...Partly cloudy. Lows in the lower 50s.
.FRIDAY...Mostly sunny. A 20 percent chance of thunderstorms in
the afternoon. Highs 79 to 85.
.FRIDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening. Lows in the lower 50s.
Chance of precipitation 30 percent.
.SATURDAY...Partly sunny. Slight chance of rain showers in the
morning, then chance of thunderstorms in the afternoon. Highs
78 to 84. Chance of precipitation 40 percent.
&&
TEMPERATURE / PRECIPITATION
Dillon 44 77 46 78 / 70 30 30 10
$$
MTZ329-161000-
Ruby Mountains and Southern Beaverhead Mountains-
Including the city of Monida Pass
337 PM MDT Sat Aug 15 2026
.TONIGHT...Mostly cloudy in the evening then becoming partly
cloudy. Chance of thunderstorms early in the evening, then chance
of rain showers late in the evening. Slight chance of rain
showers after midnight. Lows in the mid 40s. South winds up to
10 mph. Chance of precipitation 50 percent.
.SUNDAY...Partly sunny. A 50 percent chance of thunderstorms in
the afternoon. Highs 65 to 73. Southwest winds up to 10 mph.
.SUNDAY NIGHT...Mostly cloudy. Chance of rain showers and slight
chance of thunderstorms in the evening, then slight chance of
thunderstorms after midnight. Lows in the upper 40s. South winds
up to 10 mph. Chance of precipitation 40 percent.
.MONDAY...Partly sunny. Chance of rain showers and slight chance
of thunderstorms in the afternoon. Highs 67 to 75. Southwest
winds up to 10 mph. Gusts up to 25 mph in the afternoon. Chance
of precipitation 30 percent.
.MONDAY NIGHT...Mostly cloudy with chance of rain showers and
slight chance of thunderstorms. Lows in the upper 40s. Southwest
winds up to 10 mph. Chance of precipitation 50 percent.
.TUESDAY...Partly sunny. Slight chance of thunderstorms in the
morning, then chance of thunderstorms in the afternoon. Highs
65 to 73. Chance of thunderstorms 50 percent.
.TUESDAY NIGHT...Mostly cloudy in the evening then becoming
partly cloudy. Lows in the upper 40s.
.WEDNESDAY...Mostly sunny. A 20 percent chance of thunderstorms
in the afternoon. Highs 66 to 74.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 40s.
.THURSDAY...Sunny. Highs 70 to 78.
.THURSDAY NIGHT...Partly cloudy. Lows in the lower 50s.
.FRIDAY...Mostly sunny. A 20 percent chance of thunderstorms in
the afternoon. Highs 73 to 81.
.FRIDAY NIGHT...Partly cloudy with a 20 percent chance of
thunderstorms in the evening, then mostly cloudy after midnight.
Lows in the mid 50s.
.SATURDAY...Partly sunny. Slight chance of rain showers in the
morning, then chance of thunderstorms in the afternoon. Highs
71 to 79. Chance of precipitation 40 percent.
$$