Zone Forecast Product
Issued by NWS Boise, ID
Issued by NWS Boise, ID
797
FPUS55 KBOI 172031
ZFPBOI
Zone Forecasts for Southwest Idaho/Southeast Oregon
National Weather Service Boise ID
230 PM MDT Thu Sep 17 2026
Spot temperatures are for tonight, Friday, Friday night, and
Saturday.
IDZ011-180400-
West Central Mountains-
230 PM MDT Thu Sep 17 2026
.TONIGHT...Partly cloudy with a chance of rain showers and
thunderstorms. Areas of fog after midnight. Chance of rain
30 percent. Lows 42 to 51.
.FRIDAY...Increasing clouds. Areas of fog in the morning. Rain
showers with a chance of thunderstorms. Chance of rain
80 percent. Highs 61 to 72.
.FRIDAY NIGHT...Rain showers with a chance of thunderstorms in
the evening, then rain showers likely after midnight. Areas of
fog. Chance of rain 90 percent. Lows 41 to 51.
.SATURDAY...Rain showers likely in the morning, then partly
cloudy with a chance of rain showers and thunderstorms in the
afternoon. Areas of fog in the morning. Patchy fog in the
afternoon. Chance of rain 60 percent. Highs 60 to 73.
.SATURDAY NIGHT...Partly cloudy in the evening, then clearing.
Areas of fog. Lows 39 to 50.
.SUNDAY AND SUNDAY NIGHT...Mostly clear. Areas of fog in the
morning. Areas of fog after midnight. Highs 66 to 79. Lows 43 to
53.
.MONDAY...Sunny. Areas of fog in the morning. A slight chance of
rain showers in the afternoon. Chance of rain 20 percent. Highs
65 to 79.
.MONDAY NIGHT...Partly cloudy. Areas of fog after midnight. Lows
42 to 52.
.TUESDAY...Sunny. Areas of fog in the morning. A slight chance of
rain showers in the afternoon. Chance of rain 20 percent. Highs
64 to 77.
.TUESDAY NIGHT...Mostly clear. Patchy fog after midnight. Lows
40 to 50.
.WEDNESDAY...Areas of fog in the morning. Sunny. Highs 63 to 76.
.WEDNESDAY NIGHT...Increasing clouds. Lows 41 to 51.
.THURSDAY...Mostly sunny. Highs 64 to 77.
&&
TEMPERATURE
McCall 42 66 42 66
$$
=
IDZ013-180400-
Boise Mountains-
230 PM MDT Thu Sep 17 2026
.TONIGHT...Partly cloudy this evening, then mostly cloudy with a
chance of rain showers and thunderstorms after midnight. Chance
of rain 30 percent. Lows 41 to 55.
.FRIDAY...Areas of fog in the morning. Rain showers with a chance
of thunderstorms. Chance of rain 80 percent. Highs 59 to 74.
.FRIDAY NIGHT...A chance of thunderstorms in the evening. Mostly
cloudy with a chance of rain showers. Patchy fog in the evening.
Areas of fog after midnight. Chance of rain 40 percent. Lows
38 to 52.
.SATURDAY...Areas of fog in the morning. Partly cloudy with a
chance of rain showers. A chance of thunderstorms in the
afternoon. Chance of rain 30 percent. Highs 58 to 73.
.SATURDAY NIGHT...Partly cloudy in the evening, then clearing.
Patchy fog in the evening. Areas of fog after midnight. Lows
36 to 51.
.SUNDAY THROUGH MONDAY...Areas of fog in the morning. Areas of
fog through the day. Mostly clear. Highs 67 to 82. Lows 38 to 53.
.MONDAY NIGHT...Partly cloudy. Lows 38 to 53.
.TUESDAY...Sunny. Patchy fog in the morning. A slight chance of
rain showers in the afternoon. Chance of rain 20 percent. Highs
66 to 81.
.TUESDAY NIGHT THROUGH THURSDAY...Mostly clear. Lows 37 to 52.
Highs 67 to 82.
&&
TEMPERATURE
Idaho City 47 72 42 72
$$
=
IDZ028-180400-
Camas Prairie-
230 PM MDT Thu Sep 17 2026
.TONIGHT...Partly cloudy. A chance of showers and thunderstorms,
mainly after midnight. Chance of rain 30 percent. Lows 44 to 49.
West winds 10 to 15 mph with gusts to 25 mph this evening,
becoming light after midnight.
.FRIDAY...Decreasing clouds. Patchy fog in the morning. A chance
of rain showers and thunderstorms. Chance of rain 30 percent.
Cooler with highs 66 to 71. West winds 10 to 15 mph. Gusts to
25 mph in the afternoon.
.FRIDAY NIGHT...A slight chance of thunderstorms in the evening.
Partly cloudy with a slight chance of rain showers. Areas of fog
after midnight. Chance of rain 20 percent. Lows 40 to 45. Breezy.
West winds 10 to 20 mph in the evening, becoming light after
midnight.
.SATURDAY...Partly sunny. Areas of fog in the morning. A chance
of rain showers in the morning, then a slight chance of rain
showers and thunderstorms in the afternoon. Chance of rain
30 percent. Highs 64 to 69. Light winds in the morning, becoming
southwest 10 to 15 mph in the afternoon.
.SATURDAY NIGHT...Partly cloudy in the evening, then clearing.
Areas of fog after midnight. Lows 36 to 41. West winds 10 to
15 mph in the evening, becoming light after midnight.
.SUNDAY...Areas of fog in the morning. Sunny. Highs 70 to 75.
.SUNDAY NIGHT...Mostly clear. Patchy fog after midnight. Lows
41 to 46.
.MONDAY...Sunny. Highs 72 to 77.
.MONDAY NIGHT...Partly cloudy. Lows 41 to 46.
.TUESDAY THROUGH THURSDAY...Mostly clear. Highs 72 to 78. Lows
40 to 46.
&&
TEMPERATURE
Fairfield 45 69 40 67
$$
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IDZ033-180400-
Upper Weiser River-
230 PM MDT Thu Sep 17 2026
.TONIGHT...Increasing clouds. Lows 50 to 55. South winds up to
10 mph with gusts to 20 mph this evening, becoming light after
midnight.
.FRIDAY...Partly cloudy with a chance of showers and
thunderstorms. Chance of rain 30 percent. Highs 70 to 77.
Southeast winds up to 10 mph.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms in the evening. Chance of rain 30 percent. Lows
50 to 55. North winds up to 10 mph.
.SATURDAY...Areas of fog in the morning. Mostly sunny. Highs
71 to 78. North winds up to 10 mph.
.SATURDAY NIGHT...Mostly clear. Lows 48 to 53. Northeast winds up
to 10 mph.
.SUNDAY THROUGH WEDNESDAY NIGHT...Mostly clear. Highs 74 to 83.
Lows 50 to 57.
.THURSDAY...Mostly sunny. Highs 75 to 80.
&&
TEMPERATURE
Council 52 76 53 77
Cambridge 51 77 52 78
$$
=
ORZ064-180400-
Oregon Lower Treasure Valley-
230 PM MDT Thu Sep 17 2026 /130 PM PDT Thu Sep 17 2026/
.TONIGHT...Increasing clouds. Lows 50 to 55. West winds up to
10 mph with gusts to 20 mph.
.FRIDAY...Patchy fog in the morning. Partly cloudy with a slight
chance of showers and thunderstorms. Chance of rain 20 percent.
Highs 75 to 80. Northwest winds up to 10 mph.
.FRIDAY NIGHT...Partly cloudy. Lows 51 to 56. Northwest winds up
to 10 mph.
.SATURDAY...Patchy fog in the morning. Mostly sunny. Highs 78 to
83. Northwest winds up to 10 mph.
.SATURDAY NIGHT...Mostly clear. Lows 49 to 54. Northeast winds up
to 10 mph in the evening, becoming light after midnight.
.SUNDAY...Patchy fog in the morning. Sunny. Highs 80 to 85.
.SUNDAY NIGHT THROUGH WEDNESDAY NIGHT...Mostly clear. Lows 48 to
57. Highs 77 to 85.
.THURSDAY...Mostly sunny. Highs 78 to 83.
&&
TEMPERATURE
Ontario 51 78 51 80
$$
=
IDZ012-180400-
Lower Treasure Valley-
230 PM MDT Thu Sep 17 2026
.TONIGHT...Increasing clouds. Lows 50 to 55. West winds up to
10 mph. Gusts to 20 mph this evening.
.FRIDAY...Areas of fog in the morning. Partly cloudy with a
slight chance of showers and thunderstorms. Chance of rain
20 percent. Highs 74 to 79. Northwest winds up to 10 mph.
.FRIDAY NIGHT...Partly cloudy. Areas of fog after midnight. Lows
49 to 54. Northwest winds up to 10 mph.
.SATURDAY...Areas of fog in the morning. Mostly sunny. Highs
75 to 80. Light winds in the morning, becoming north 10 to 15 mph
in the afternoon.
.SATURDAY NIGHT...Mostly clear. Areas of fog after midnight. Lows
49 to 54. North winds 10 to 15 mph in the evening, becoming light
after midnight.
.SUNDAY...Areas of fog in the morning. Sunny. Highs 79 to 84.
.SUNDAY NIGHT THROUGH THURSDAY...Mostly clear. Lows 50 to 57.
Highs 77 to 84.
&&
TEMPERATURE
Caldwell 52 76 50 77
$$
=
IDZ014-180400-
Upper Treasure Valley-
230 PM MDT Thu Sep 17 2026
.TONIGHT...Partly cloudy this evening, then mostly cloudy with a
chance of showers and thunderstorms after midnight. Chance of
rain 30 percent. Lows 51 to 56. Breezy. Northwest winds 10 to
20 mph with gusts to 30 mph this evening, decreasing to around
10 mph after midnight.
.FRIDAY...Decreasing clouds. Patchy fog in the morning. A chance
of showers and thunderstorms. Chance of rain 30 percent. Not as
warm with highs 72 to 77. Breezy. Northwest winds 10 to 20 mph.
Gusts to 30 mph in the afternoon.
.FRIDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. A slight chance of thunderstorms in the evening. A
slight chance of showers. Areas of fog after midnight. Chance of
rain 20 percent. Lows 48 to 53. Breezy. Northwest winds 10 to
20 mph with gusts to 30 mph in the evening, becoming west up to
10 mph after midnight.
.SATURDAY...Areas of fog in the morning. Partly cloudy with a
slight chance of showers in the morning, then sunny in the
afternoon. Chance of rain 20 percent. Highs 72 to 77. Northwest
winds 10 to 15 mph. Gusts to 25 mph in the afternoon.
.SATURDAY NIGHT...Mostly clear. Areas of fog after midnight. Lows
47 to 54. Northwest winds 10 to 15 mph with gusts to 25 mph in
the evening, shifting to southeast after midnight.
.SUNDAY...Areas of fog in the morning. Sunny. Highs 78 to 83.
.SUNDAY NIGHT AND MONDAY...Mostly clear. Areas of fog through the
day. Lows 50 to 56. Highs 79 to 84.
.MONDAY NIGHT...Partly cloudy. Lows 50 to 56.
.TUESDAY THROUGH THURSDAY...Mostly clear. Highs 78 to 86. Lows
49 to 56.
&&
TEMPERATURE
Boise 55 75 53 75
Mountain Home 54 75 50 75
$$
=
IDZ016-180400-
Western Magic Valley-
230 PM MDT Thu Sep 17 2026
.TONIGHT...Partly cloudy this evening, then clearing. A slight
chance of showers and thunderstorms. Chance of rain 20 percent.
Lows 49 to 54. Southwest winds 10 to 15 mph. Gusts to 25 mph this
evening.
.FRIDAY...Partly cloudy with a chance of showers and
thunderstorms. Chance of rain 30 percent. Cooler with highs 69 to
74. West winds 10 to 15 mph. Gusts to 30 mph in the afternoon.
.FRIDAY NIGHT...Increasing clouds. A slight chance of
thunderstorms in the evening. A slight chance of showers. Patchy
fog after midnight. Chance of rain 20 percent. Lows 46 to 51.
Breezy. Southwest winds 10 to 20 mph. Gusts to 30 mph in the
evening.
.SATURDAY...Partly cloudy. A chance of rain showers in the
morning. Patchy fog in the morning. Chance of rain 30 percent.
Highs 66 to 71. Southwest winds 10 to 15 mph. Gusts to 25 mph in
the afternoon.
.SATURDAY NIGHT...Decreasing clouds. Patchy fog in the evening.
Areas of fog after midnight. Lows 44 to 49. Southwest winds 10 to
15 mph in the evening, shifting to southeast after midnight.
.SUNDAY...Areas of fog in the morning. Sunny. Highs 74 to 79.
.SUNDAY NIGHT AND MONDAY...Mostly clear. Lows 48 to 53. Highs
76 to 81.
.MONDAY NIGHT...Partly cloudy. Patchy fog after midnight. Lows
48 to 53.
.TUESDAY THROUGH THURSDAY...Mostly clear. Highs 76 to 82. Lows
48 to 54.
&&
TEMPERATURE
Jerome 51 69 48 67
Twin Falls 53 70 49 68
$$
=
IDZ029-180400-
Owyhee Mountains-
230 PM MDT Thu Sep 17 2026
.TONIGHT...Increasing clouds. Lows 46 to 54.
.FRIDAY...Partly cloudy with a chance of rain showers and
thunderstorms. Chance of rain 30 percent. Highs 66 to 71.
.FRIDAY NIGHT...Partly cloudy. A slight chance of rain showers
and thunderstorms in the evening. Patchy fog after midnight.
Chance of rain 20 percent. Lows 44 to 54.
.SATURDAY...Patchy fog in the morning. Mostly sunny. Highs 68 to
73.
.SATURDAY NIGHT...Mostly clear. Areas of fog after midnight. Lows
45 to 54.
.SUNDAY...Areas of fog in the morning. Sunny. Highs 72 to 79.
.SUNDAY NIGHT AND MONDAY...Mostly clear. Lows 48 to 56. Highs
73 to 79.
.MONDAY NIGHT...Partly cloudy. Lows 48 to 57.
.TUESDAY THROUGH THURSDAY...Mostly clear. Highs 71 to 80. Lows
48 to 55.
$$
=
IDZ015-180400-
Southwest Highlands-
230 PM MDT Thu Sep 17 2026
.TONIGHT...Partly cloudy this evening, then mostly cloudy with a
chance of rain showers and thunderstorms after midnight. Chance
of rain 30 percent. Lows 46 to 52. Breezy.
.FRIDAY...Partly cloudy with a chance of rain showers and
thunderstorms. Chance of rain 30 percent. Cooler with highs 65 to
70.
.FRIDAY NIGHT...Partly cloudy. A chance of rain showers and
thunderstorms in the evening, then a slight chance of rain
showers after midnight. Patchy fog after midnight. Chance of rain
30 percent. Lows 43 to 49.
.SATURDAY...Patchy fog in the morning. Mostly sunny. Highs 66 to
71.
.SATURDAY NIGHT...Mostly clear. Patchy fog after midnight. Lows
43 to 48.
.SUNDAY AND SUNDAY NIGHT...Mostly clear. Patchy fog in the
morning. Patchy fog after midnight. Highs 73 to 78. Lows 47 to
52.
.MONDAY...Patchy fog in the morning. Mostly sunny. Highs 75 to
80.
.MONDAY NIGHT...Partly cloudy. Lows 47 to 52.
.TUESDAY THROUGH THURSDAY...Mostly clear. Highs 75 to 81. Lows
46 to 52.
$$
=
IDZ030-180400-
Southern Twin Falls County-
230 PM MDT Thu Sep 17 2026
.TONIGHT...Partly cloudy with a chance of rain showers and
thunderstorms this evening, then mostly clear after midnight.
Chance of rain 30 percent. Lows 48 to 53.
.FRIDAY...Partly cloudy with a chance of rain showers and
thunderstorms. Chance of rain 40 percent. Cooler with highs 67 to
72.
.FRIDAY NIGHT...A slight chance of thunderstorms in the evening.
Partly cloudy with a slight chance of rain showers. Patchy fog
after midnight. Chance of rain 20 percent. Lows 45 to 50.
.SATURDAY...Mostly sunny. Patchy fog in the morning. A chance of
rain showers in the morning, then a slight chance of rain showers
and thunderstorms in the afternoon. Chance of rain 30 percent.
Highs 65 to 70.
.SATURDAY NIGHT...Decreasing clouds. Patchy fog after midnight.
Lows 44 to 49.
.SUNDAY...Patchy fog in the morning. Sunny. Highs 71 to 76.
.SUNDAY NIGHT...Increasing clouds. Lows 47 to 52.
.MONDAY AND MONDAY NIGHT...Partly cloudy. Highs 74 to 79. Lows
48 to 53.
.TUESDAY...Partly cloudy. A slight chance of rain showers in the
afternoon. Chance of rain 20 percent. Highs 74 to 79.
.TUESDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows 48 to 53.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs 75 to 81. Lows
48 to 53.
$$
=
ORZ062-180400-
Baker County-
130 PM PDT Thu Sep 17 2026
.TONIGHT...Rain showers likely with a chance of thunderstorms
this evening. Areas of fog. Chance of rain 60 percent. Lows 43 to
52. West winds up to 10 mph.
.FRIDAY...Areas of fog in the morning. Partly cloudy with a
chance of rain showers and thunderstorms. Chance of rain
30 percent. Highs 68 to 77. Northwest winds up to 10 mph. Gusts
to 20 mph in the afternoon.
.FRIDAY NIGHT...Partly cloudy. A slight chance of rain showers
and thunderstorms in the evening. Areas of fog after midnight.
Chance of rain 20 percent. Lows 43 to 53. Northwest winds up to
10 mph with gusts to 20 mph.
.SATURDAY...Areas of fog in the morning. Sunny. Highs 72 to 79.
Northwest winds up to 10 mph.
.SATURDAY NIGHT...Mostly clear. Areas of fog after midnight. Lows
42 to 52. North winds up to 10 mph in the evening, becoming light
after midnight.
.SUNDAY...Areas of fog in the morning. Sunny. Highs 75 to 82.
.SUNDAY NIGHT THROUGH TUESDAY NIGHT...Mostly clear. Lows 39 to
54. Highs 73 to 83.
.WEDNESDAY...Patchy fog in the morning. Sunny. Highs 71 to 79.
.WEDNESDAY NIGHT...Increasing clouds. Lows 39 to 52.
.THURSDAY...Mostly sunny. Highs 73 to 80.
&&
TEMPERATURE
Baker City 43 72 43 77
$$
=
ORZ061-180400-
Harney County-
130 PM PDT Thu Sep 17 2026
.TONIGHT...Partly cloudy with a chance of rain showers and
thunderstorms. Areas of fog. Chance of rain 30 percent. Lows
42 to 48. West winds 10 to 15 mph.
.FRIDAY...Areas of fog in the morning. Partly cloudy with a
chance of rain showers and thunderstorms. Chance of rain
30 percent. Highs 65 to 72. West winds 10 to 15 mph. Gusts to
25 mph in the afternoon.
.FRIDAY NIGHT...Decreasing clouds. Patchy fog after midnight.
Lows 39 to 47. Northwest winds 10 to 15 mph. Gusts to 25 mph in
the evening.
.SATURDAY...Areas of fog in the morning. Sunny. Highs 68 to 76.
West winds up to 10 mph.
.SATURDAY NIGHT...Mostly clear. Lows 39 to 48. Northwest winds up
to 10 mph.
.SUNDAY THROUGH WEDNESDAY NIGHT...Mostly clear. Highs 71 to 81.
Lows 38 to 51.
.THURSDAY...Mostly sunny. Highs 73 to 80.
&&
TEMPERATURE
Burns 42 72 39 76
$$
=
ORZ063-180400-
Malheur County-
230 PM MDT Thu Sep 17 2026 /130 PM PDT Thu Sep 17 2026/
.TONIGHT...Increasing clouds. Areas of fog after midnight. Lows
44 to 53. West winds 10 to 15 mph. Gusts to 25 mph this evening.
.FRIDAY...Areas of fog in the morning. Partly cloudy with a
chance of rain showers and thunderstorms. Chance of rain
30 percent. Highs 69 to 76. West winds up to 10 mph with gusts to
20 mph.
.FRIDAY NIGHT...Partly cloudy. A slight chance of rain showers
and thunderstorms in the evening. Areas of fog after midnight.
Chance of rain 20 percent. Lows 44 to 54. Northwest winds 10 to
15 mph.
.SATURDAY...Areas of fog in the morning. Sunny. Highs 73 to 79.
Northwest winds up to 10 mph.
.SATURDAY NIGHT...Mostly clear. Lows 43 to 53. Northeast winds up
to 10 mph in the evening, becoming light after midnight.
.SUNDAY THROUGH MONDAY...Mostly clear. Highs 76 to 83. Lows 47 to
56.
.MONDAY NIGHT...Increasing clouds. Lows 47 to 56.
.TUESDAY THROUGH WEDNESDAY NIGHT...Mostly clear. Highs 75 to 82.
Lows 45 to 54.
.THURSDAY...Mostly sunny. Highs 76 to 83.
$$
=