Zone Forecast Product
Issued by NWS Boise, ID
Issued by NWS Boise, ID
112
FPUS55 KBOI 192032
ZFPBOI
Zone Forecasts for Southwest Idaho/Southeast Oregon
National Weather Service Boise ID
230 PM MDT Wed Aug 19 2026
Spot temperatures are for tonight, Thursday, Thursday night, and
Friday.
IDZ011-200400-
West Central Mountains-
230 PM MDT Wed Aug 19 2026
.TONIGHT...Mostly clear. Lows 48 to 60.
.THURSDAY...Sunny. Highs 85 to 97.
.THURSDAY NIGHT...Increasing clouds. Patchy smoke after midnight.
Lows 53 to 65.
.FRIDAY...Patchy smoke in the morning. Mostly sunny. Highs 85 to
98.
.FRIDAY NIGHT...Mostly cloudy. A slight chance of showers and
thunderstorms in the evening. Thunderstorms may produce gusty
winds in the evening. Chance of rain 20 percent. Lows 56 to 66.
.SATURDAY...Mostly cloudy in the morning, then partly cloudy with
a chance of showers and thunderstorms in the afternoon. Chance of
rain 40 percent. Highs 77 to 91.
.SATURDAY NIGHT...A slight chance of thunderstorms in the
evening. Partly cloudy with a slight chance of showers. Areas of
fog after midnight. Chance of rain 20 percent. Lows 49 to 60.
.SUNDAY...Areas of fog in the morning. Sunny. Highs 72 to 85.
.SUNDAY NIGHT...Mostly clear. Lows 46 to 56.
.MONDAY AND MONDAY NIGHT...Partly cloudy. A 20 percent chance of
rain showers. Highs 75 to 89. Lows 50 to 60.
.TUESDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
76 to 89.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows 50 to 60.
Highs 74 to 88.
&&
TEMPERATURE
McCall 46 92 52 93
$$
=
IDZ013-200400-
Boise Mountains-
230 PM MDT Wed Aug 19 2026
.TONIGHT...Mostly clear. Lows 48 to 62.
.THURSDAY...Sunny. Highs 86 to 101.
.THURSDAY NIGHT...Mostly cloudy. Lows 51 to 65.
.FRIDAY...Mostly sunny. Highs 87 to 102.
.FRIDAY NIGHT...Mostly cloudy. Lows 55 to 70.
.SATURDAY...Partly cloudy. A slight chance of showers in the
morning, then a chance of showers with a slight chance of
thunderstorms in the afternoon. Chance of rain 30 percent. Highs
79 to 94.
.SATURDAY NIGHT...Partly cloudy. A slight chance of rain showers
in the evening. Chance of rain 20 percent. Lows 46 to 61.
.SUNDAY AND SUNDAY NIGHT...Mostly clear. Highs 75 to 89. Lows
43 to 58.
.MONDAY AND MONDAY NIGHT...Partly cloudy. A 20 percent chance of
rain showers. Highs 77 to 92. Lows 45 to 60.
.TUESDAY...Partly cloudy. A slight chance of rain showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
78 to 93.
.TUESDAY NIGHT...Decreasing clouds. Lows 46 to 61.
.WEDNESDAY...Partly cloudy with a slight chance of rain showers.
A slight chance of thunderstorms in the afternoon. Chance of rain
20 percent. Highs 77 to 91.
&&
TEMPERATURE
Idaho City 47 99 50 101
$$
=
IDZ028-200400-
Camas Prairie-
230 PM MDT Wed Aug 19 2026
.TONIGHT...Mostly clear. Lows 45 to 52. Northwest winds up to
10 mph. Gusts to 20 mph this evening.
.THURSDAY...Sunny. Highs 93 to 98. Northeast winds up to 10 mph
in the morning, shifting to south in the afternoon.
.THURSDAY NIGHT...Mostly cloudy. Lows 49 to 56. West winds 10 to
15 mph with gusts to 25 mph in the evening, becoming light after
midnight.
.FRIDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Thunderstorms may produce gusty
winds in the afternoon. Chance of rain 20 percent. Highs 93 to
98. Light winds in the morning, becoming southeast around 10 mph
in the afternoon.
.FRIDAY NIGHT...Mostly cloudy. A slight chance of showers and
thunderstorms in the evening. Thunderstorms may produce gusty
winds in the evening. Chance of rain 20 percent. Lows 59 to 64.
Southwest winds 10 to 15 mph in the evening, becoming light after
midnight.
.SATURDAY...Partly cloudy. A slight chance of showers in the
morning. Chance of rain 20 percent. Highs 86 to 91.
.SATURDAY NIGHT...Partly cloudy. A slight chance of showers in
the evening. Chance of rain 20 percent. Lows 50 to 56.
.SUNDAY THROUGH MONDAY...Partly cloudy. Highs 82 to 88. Lows
47 to 52.
.MONDAY NIGHT...Partly cloudy. A slight chance of showers in the
evening. Chance of rain 20 percent. Lows 49 to 55.
.TUESDAY...Mostly sunny. Highs 84 to 89.
.TUESDAY NIGHT...Decreasing clouds. Lows 50 to 55.
.WEDNESDAY...Partly cloudy. A slight chance of showers in the
morning. Chance of rain 20 percent. Highs 83 to 88.
&&
TEMPERATURE
Fairfield 45 95 49 95
$$
=
IDZ033-200400-
Upper Weiser River-
230 PM MDT Wed Aug 19 2026
...HEAT ADVISORY IN EFFECT FROM NOON THURSDAY TO 9 PM MDT
FRIDAY...
.TONIGHT...Mostly clear. Lows 60 to 67. Northeast winds up to
10 mph.
.THURSDAY...Sunny. Highs 94 to 100. Northeast winds up to 10 mph
in the morning, shifting to south in the afternoon.
.THURSDAY NIGHT...Mostly cloudy. Patchy smoke after midnight.
Lows 64 to 70. Light winds in the evening, becoming north up to
10 mph after midnight.
.FRIDAY...Patchy smoke in the morning. Partly sunny. Highs 95 to
102. Northeast winds up to 10 mph with gusts to 20 mph in the
morning, becoming light in the afternoon.
.FRIDAY NIGHT...Mostly cloudy. Lows 67 to 72. Northwest winds up
to 10 mph.
.SATURDAY...Decreasing clouds. Highs 90 to 95.
.SATURDAY NIGHT...Partly cloudy with a 20 percent chance of
showers. Lows 59 to 64.
.SUNDAY THROUGH MONDAY...Mostly clear. Highs 84 to 92. Lows 56 to
62.
.MONDAY NIGHT THROUGH WEDNESDAY...Partly cloudy. Lows 60 to 66.
Highs 86 to 93.
&&
TEMPERATURE
Council 62 100 66 102
Cambridge 60 99 64 101
$$
=
ORZ064-200400-
Oregon Lower Treasure Valley-
230 PM MDT Wed Aug 19 2026 /130 PM PDT Wed Aug 19 2026/
...HEAT ADVISORY IN EFFECT FROM NOON MDT /11 AM PDT/ THURSDAY TO
9 PM MDT /8 PM PDT/ FRIDAY...
.TONIGHT...Mostly clear. Lows 60 to 67. Light winds this evening,
becoming northwest up to 10 mph after midnight.
.THURSDAY...Sunny. Highs 97 to 102. West winds up to 10 mph in
the morning, becoming light in the afternoon.
.THURSDAY NIGHT...Mostly cloudy. Patchy smoke after midnight.
Lows 63 to 70. South winds up to 10 mph in the evening, shifting
to west after midnight.
.FRIDAY...Partly sunny. Patchy smoke. Highs 97 to 102. Northwest
winds up to 10 mph in the morning, becoming light in the
afternoon.
.FRIDAY NIGHT...Mostly cloudy. Lows 67 to 73. Light winds in the
evening, becoming west up to 10 mph after midnight.
.SATURDAY...Decreasing clouds. Highs 93 to 98.
.SATURDAY NIGHT...Mostly clear in the evening, then becoming
partly cloudy. Lows 61 to 66.
.SUNDAY AND SUNDAY NIGHT...Mostly clear. Highs 88 to 93. Lows
58 to 64.
.MONDAY THROUGH WEDNESDAY...Partly cloudy. Highs 90 to 96. Lows
61 to 67.
&&
TEMPERATURE
Ontario 60 99 63 99
$$
=
IDZ012-200400-
Lower Treasure Valley-
230 PM MDT Wed Aug 19 2026
...HEAT ADVISORY IN EFFECT FROM NOON THURSDAY TO 9 PM MDT
FRIDAY...
.TONIGHT...Mostly clear. Lows 59 to 65. Light winds.
.THURSDAY...Sunny. Highs 96 to 101. Light winds in the morning,
becoming northwest up to 10 mph in the afternoon.
.THURSDAY NIGHT...Mostly cloudy. Lows 61 to 68. Northwest winds
up to 10 mph.
.FRIDAY...Patchy smoke in the morning. Partly sunny. Highs 97 to
102. Light winds.
.FRIDAY NIGHT...Mostly cloudy. Lows 66 to 71. Northwest winds up
to 10 mph in the evening, shifting to south after midnight.
.SATURDAY...Decreasing clouds. Highs 93 to 98.
.SATURDAY NIGHT...Partly cloudy. A slight chance of showers in
the evening. Chance of rain 20 percent. Lows 60 to 65.
.SUNDAY AND SUNDAY NIGHT...Mostly clear. Highs 87 to 92. Lows
57 to 62.
.MONDAY THROUGH WEDNESDAY...Partly cloudy. Highs 89 to 96. Lows
59 to 65.
&&
TEMPERATURE
Caldwell 60 99 62 99
$$
=
IDZ014-200400-
Upper Treasure Valley-
230 PM MDT Wed Aug 19 2026
...HEAT ADVISORY IN EFFECT FROM NOON THURSDAY TO 9 PM MDT
FRIDAY...
.TONIGHT...Mostly clear. Lows 57 to 66. Northwest winds up to
10 mph this evening, shifting to east after midnight.
.THURSDAY...Sunny. Highs 98 to 104. East winds up to 10 mph in
the morning, shifting to northwest in the afternoon.
.THURSDAY NIGHT...Mostly cloudy. Lows 62 to 69. Northwest winds
10 to 15 mph.
.FRIDAY...Mostly sunny. Highs 98 to 104. East winds up to 10 mph.
.FRIDAY NIGHT...Mostly cloudy. Lows 66 to 72. Northwest winds up
to 10 mph in the evening, shifting to southeast after midnight.
Gusts to 20 mph.
.SATURDAY...Partly sunny. Highs 94 to 99.
.SATURDAY NIGHT...Partly cloudy. A slight chance of showers in
the evening. Chance of rain 20 percent. Lows 60 to 65.
.SUNDAY...Sunny. Highs 87 to 92.
.SUNDAY NIGHT...Increasing clouds. Lows 56 to 61.
.MONDAY...Partly cloudy. A slight chance of showers in the
afternoon. Chance of rain 20 percent. Highs 90 to 95.
.MONDAY NIGHT THROUGH WEDNESDAY...Partly cloudy. Lows 59 to 65.
Highs 90 to 97.
&&
TEMPERATURE
Boise 66 99 69 100
Mountain Home 60 103 64 103
$$
=
IDZ016-200400-
Western Magic Valley-
230 PM MDT Wed Aug 19 2026
...HEAT ADVISORY IN EFFECT FROM NOON THURSDAY TO 9 PM MDT
FRIDAY...
.TONIGHT...Mostly clear. Lows 57 to 64. East winds up to 10 mph.
.THURSDAY...Sunny. Highs 96 to 101. Northeast winds 10 to 15 mph.
.THURSDAY NIGHT...Decreasing clouds. Lows 62 to 68. Southwest
winds around 10 mph in the evening, shifting to southeast after
midnight.
.FRIDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Thunderstorms may produce gusty
winds in the afternoon. Chance of rain 20 percent. Highs 95 to
101. East winds up to 10 mph.
.FRIDAY NIGHT...Mostly cloudy. A slight chance of showers and
thunderstorms in the evening. Thunderstorms may produce gusty
winds in the evening. Chance of rain 20 percent. Lows 68 to 73.
Southeast winds 10 to 15 mph.
.SATURDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
90 to 95.
.SATURDAY NIGHT...Partly cloudy with a slight chance of showers
in the evening, then mostly cloudy after midnight. Chance of rain
20 percent. Lows 60 to 65.
.SUNDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
85 to 90.
.SUNDAY NIGHT...Partly cloudy. Lows 57 to 62.
.MONDAY...Partly cloudy with a slight chance of showers. A slight
chance of thunderstorms in the afternoon. Chance of rain
20 percent. Highs 86 to 91.
.MONDAY NIGHT...Mostly cloudy with a slight chance of showers in
the evening, then partly cloudy after midnight. Chance of rain
20 percent. Lows 58 to 63.
.TUESDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
88 to 93.
.TUESDAY NIGHT...Mostly cloudy. A slight chance of showers in the
evening. Chance of rain 20 percent. Lows 59 to 64.
.WEDNESDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
87 to 92.
&&
TEMPERATURE
Jerome 61 96 65 95
Twin Falls 64 96 68 97
$$
=
IDZ029-200400-
Owyhee Mountains-
230 PM MDT Wed Aug 19 2026
.TONIGHT...Mostly clear. Lows 59 to 68.
.THURSDAY...Sunny. Highs 91 to 97.
.THURSDAY NIGHT...Mostly cloudy. Lows 61 to 71.
.FRIDAY...Partly sunny. Highs 90 to 98.
.FRIDAY NIGHT...Mostly cloudy. Lows 63 to 71.
.SATURDAY...Decreasing clouds. Highs 86 to 92.
.SATURDAY NIGHT...Partly cloudy. A slight chance of showers in
the evening. Chance of rain 20 percent. Lows 55 to 64.
.SUNDAY AND SUNDAY NIGHT...Mostly clear. Highs 80 to 87. Lows
54 to 62.
.MONDAY...Partly cloudy. A chance of showers with a slight chance
of thunderstorms in the afternoon. Chance of rain 30 percent.
Highs 82 to 89.
.MONDAY NIGHT...Partly cloudy with a slight chance of showers in
the evening, then mostly cloudy after midnight. Chance of rain
20 percent. Lows 56 to 64.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs 82 to 90. Lows
57 to 65.
$$
=
IDZ015-200400-
Southwest Highlands-
230 PM MDT Wed Aug 19 2026
.TONIGHT...Mostly clear. Lows 58 to 63.
.THURSDAY...Sunny. Highs 95 to 100.
.THURSDAY NIGHT...Decreasing clouds. Lows 60 to 67.
.FRIDAY...Mostly sunny. Highs 94 to 99.
.FRIDAY NIGHT...Mostly cloudy. Lows 63 to 69.
.SATURDAY...Partly cloudy. A slight chance of thunderstorms in
the afternoon. Highs 88 to 94.
.SATURDAY NIGHT...Partly cloudy. A slight chance of showers in
the evening. Chance of rain 20 percent. Lows 57 to 62. Breezy.
.SUNDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
85 to 90.
.SUNDAY NIGHT...Partly cloudy. Lows 55 to 60.
.MONDAY...Partly cloudy. A chance of showers with a slight chance
of thunderstorms in the afternoon. Chance of rain 30 percent.
Highs 85 to 91.
.MONDAY NIGHT...Partly cloudy. A slight chance of showers in the
evening. Chance of rain 20 percent. Lows 56 to 61.
.TUESDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
86 to 92.
.TUESDAY NIGHT...Mostly cloudy. Lows 56 to 62.
.WEDNESDAY...Partly cloudy. A slight chance of showers in the
afternoon. Chance of rain 20 percent. Highs 86 to 91.
$$
=
IDZ030-200400-
Southern Twin Falls County-
230 PM MDT Wed Aug 19 2026
.TONIGHT...Mostly clear. Lows 60 to 66.
.THURSDAY...Partly cloudy. A slight chance of showers in the
afternoon. Chance of rain 20 percent. Highs 95 to 100.
.THURSDAY NIGHT...Partly cloudy. Lows 64 to 69.
.FRIDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Thunderstorms may produce gusty
winds in the afternoon. Chance of rain 20 percent. Highs 95 to
100.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers with a slight
chance of thunderstorms in the evening. Thunderstorms may produce
gusty winds in the evening. Chance of rain 30 percent. Lows 68 to
73.
.SATURDAY...Partly cloudy. A chance of showers and thunderstorms
in the afternoon. Chance of rain 30 percent. Highs 88 to 93.
Breezy.
.SATURDAY NIGHT...Mostly cloudy. A chance of showers with a
slight chance of thunderstorms in the evening. Chance of rain
30 percent. Lows 61 to 66.
.SUNDAY...Partly cloudy. A chance of showers and thunderstorms in
the afternoon. Chance of rain 30 percent. Highs 84 to 89.
.SUNDAY NIGHT...Partly cloudy. A chance of showers with a slight
chance of thunderstorms in the evening. Chance of rain
30 percent. Lows 58 to 63.
.MONDAY...Partly cloudy. A chance of showers with a slight chance
of thunderstorms in the afternoon. Chance of rain 30 percent.
Highs 85 to 90.
.MONDAY NIGHT...Mostly cloudy. A slight chance of showers and
thunderstorms in the evening. Chance of rain 20 percent. Lows
59 to 64.
.TUESDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
87 to 92.
.TUESDAY NIGHT...Mostly cloudy. A slight chance of showers and
thunderstorms in the evening. Chance of rain 20 percent. Lows
60 to 65.
.WEDNESDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
86 to 91.
$$
=
ORZ062-200400-
Baker County-
130 PM PDT Wed Aug 19 2026
.TONIGHT...Mostly clear. Lows 45 to 60. Northwest winds up to
10 mph.
.THURSDAY...Sunny. Highs 93 to 100. Southwest winds up to 10 mph.
.THURSDAY NIGHT...Mostly cloudy. Patchy smoke. Lows 50 to 64.
Northwest winds up to 10 mph with gusts to 20 mph.
.FRIDAY...Patchy smoke in the morning. Partly sunny. Highs 93 to
101. Northeast winds up to 10 mph.
.FRIDAY NIGHT...Mostly cloudy. Lows 57 to 69. West winds up to
10 mph.
.SATURDAY...Decreasing clouds. Highs 86 to 96.
.SATURDAY NIGHT THROUGH MONDAY...Mostly clear. Lows 43 to 58.
Highs 82 to 92.
.MONDAY NIGHT THROUGH WEDNESDAY...Partly cloudy. Lows 48 to 62.
Highs 84 to 94.
&&
TEMPERATURE
Baker City 45 96 50 97
$$
=
ORZ061-200400-
Harney County-
130 PM PDT Wed Aug 19 2026
.TONIGHT...Mostly clear. Lows 48 to 58. North winds up to 10 mph
with gusts to 20 mph.
.THURSDAY...Sunny. Highs 86 to 96. Southwest winds up to 10 mph
with gusts to 20 mph.
.THURSDAY NIGHT...Mostly cloudy. Lows 53 to 62. West winds up to
10 mph with gusts to 20 mph.
.FRIDAY...Decreasing clouds. Highs 85 to 95. West winds up to
10 mph. Gusts to 20 mph in the afternoon.
.FRIDAY NIGHT...Mostly cloudy. Lows 55 to 64. West winds 10 to
15 mph.
.SATURDAY...Decreasing clouds. Highs 81 to 91.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Mostly clear. Lows 44 to
55. Highs 77 to 87.
.MONDAY AND MONDAY NIGHT...Partly cloudy. A 20 percent chance of
showers. Highs 80 to 90. Lows 48 to 57.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs 80 to 90. Lows
48 to 57.
&&
TEMPERATURE
Burns 49 95 55 94
$$
=
ORZ063-200400-
Malheur County-
230 PM MDT Wed Aug 19 2026 /130 PM PDT Wed Aug 19 2026/
.TONIGHT...Mostly clear. Lows 55 to 65. East winds 10 to 15 mph.
.THURSDAY...Sunny. Highs 95 to 100. Southwest winds 10 to 15 mph.
.THURSDAY NIGHT...Mostly cloudy. Lows 58 to 68. West winds 10 to
15 mph.
.FRIDAY...Patchy smoke in the morning. Partly sunny. Highs 95 to
100. Southeast winds up to 10 mph.
.FRIDAY NIGHT...Mostly cloudy. Lows 61 to 70. Northwest winds
10 to 15 mph in the evening, shifting to southwest after
midnight.
.SATURDAY...Decreasing clouds. Highs 90 to 95.
.SATURDAY NIGHT...Partly cloudy. Lows 52 to 62. Breezy.
.SUNDAY AND SUNDAY NIGHT...Mostly clear. Highs 85 to 91. Lows
51 to 61.
.MONDAY...Partly sunny in the morning, then clearing. Highs 87 to
93.
.MONDAY NIGHT...Partly cloudy with a slight chance of showers in
the evening, then mostly cloudy after midnight. Chance of rain
20 percent. Lows 54 to 64.
.TUESDAY THROUGH WEDNESDAY...Partly cloudy. Highs 87 to 94. Lows
54 to 64.
$$
=