Zone Forecast Product
Issued by NWS Boise, ID
Issued by NWS Boise, ID
166
FPUS55 KBOI 170831
ZFPBOI
Zone Forecasts for Southwest Idaho/Southeast Oregon
National Weather Service Boise ID
230 AM MDT Mon Aug 17 2026
Spot temperatures are for today, tonight, and Tuesday.
IDZ011-171600-
West Central Mountains-
230 AM MDT Mon Aug 17 2026
.TODAY...Mostly cloudy. Areas of fog this morning. A slight
chance of rain showers and thunderstorms this afternoon. Chance
of rain 20 percent. Highs 76 to 90.
.TONIGHT...A slight chance of thunderstorms in the evening.
Mostly cloudy with a slight chance of showers. Chance of rain
20 percent. Lows 48 to 59.
.TUESDAY...Mostly sunny. Areas of fog in the morning. A slight
chance of rain showers and thunderstorms in the afternoon. Chance
of rain 20 percent. Highs 75 to 89.
.TUESDAY NIGHT...Mostly clear. Lows 47 to 58.
.WEDNESDAY...Sunny. Highs 75 to 89.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 48 to 59.
Highs 80 to 94.
.THURSDAY NIGHT...Partly cloudy. Lows 54 to 64.
.FRIDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
81 to 95.
.FRIDAY NIGHT...Partly cloudy. A slight chance of showers in the
evening. Chance of rain 20 percent. Lows 53 to 63.
.SATURDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
74 to 88.
.SATURDAY NIGHT...Partly cloudy. A slight chance of showers after
midnight. Areas of fog after midnight. Chance of rain 20 percent.
Lows 49 to 59.
.SUNDAY...Areas of fog in the morning. Mostly sunny. Highs 72 to
85.
&&
TEMPERATURE
McCall 84 47 83
$$
=
IDZ013-171600-
Boise Mountains-
230 AM MDT Mon Aug 17 2026
.TODAY...Mostly cloudy. A slight chance of showers and
thunderstorms this afternoon. Chance of rain 20 percent. Highs
77 to 92.
.TONIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms in the evening, then partly cloudy after midnight.
Chance of rain 20 percent. Lows 46 to 61.
.TUESDAY...Mostly sunny. Highs 77 to 92.
.TUESDAY NIGHT...Decreasing clouds. Lows 45 to 60.
.WEDNESDAY...Sunny. Highs 78 to 93.
.WEDNESDAY NIGHT...Mostly clear. Lows 47 to 62.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs 84 to 99. Lows
49 to 64.
.FRIDAY NIGHT...Partly cloudy with a slight chance of showers in
the evening, then mostly cloudy after midnight. Chance of rain
20 percent. Lows 49 to 64.
.SATURDAY...Partly cloudy with a slight chance of showers. A
slight chance of thunderstorms in the afternoon. Chance of rain
20 percent. Highs 77 to 91.
.SATURDAY NIGHT...Partly cloudy. A slight chance of rain showers
in the evening. Chance of rain 20 percent. Lows 45 to 60.
.SUNDAY...Sunny. Highs 75 to 89.
&&
TEMPERATURE
Idaho City 91 48 91
$$
=
IDZ028-171600-
Camas Prairie-
230 AM MDT Mon Aug 17 2026
.TODAY...Partly sunny. Highs 84 to 89. Northeast winds up to
10 mph this morning, shifting to southwest this afternoon.
.TONIGHT...Mostly cloudy. Lows 48 to 54. Northwest winds up to
10 mph. Gusts to 20 mph in the evening.
.TUESDAY...Mostly sunny. Highs 83 to 88. East winds around 10 mph
in the morning, shifting to southwest with gusts to 25 mph in the
afternoon.
.TUESDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows 45 to 53. Northwest winds 10 to 15 mph. Gusts to 25 mph in
the evening.
.WEDNESDAY...Sunny. Highs 84 to 89. North winds up to 10 mph in
the morning, shifting to southwest in the afternoon.
.WEDNESDAY NIGHT...Mostly clear. Lows 47 to 54.
.THURSDAY THROUGH FRIDAY...Partly cloudy. Highs 89 to 95. Lows
56 to 61.
.FRIDAY NIGHT...Increasing clouds. A chance of showers in the
evening. Chance of rain 30 percent. Lows 55 to 60.
.SATURDAY AND SATURDAY NIGHT...Partly cloudy. Highs 83 to 88.
Lows 49 to 55.
.SUNDAY...Sunny. Highs 80 to 85.
&&
TEMPERATURE
Fairfield 87 48 86
$$
=
IDZ033-171600-
Upper Weiser River-
230 AM MDT Mon Aug 17 2026
.TODAY...Mostly cloudy. Highs 88 to 93. Northeast winds up to
10 mph this morning, shifting to southwest around 10 mph this
afternoon.
.TONIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms in the evening, then partly cloudy after midnight.
Chance of rain 20 percent. Lows 61 to 66. North winds 10 to
15 mph.
.TUESDAY...Sunny. Highs 89 to 94. North winds 10 to 15 mph in the
morning, shifting to west in the afternoon.
.TUESDAY NIGHT...Decreasing clouds. Lows 60 to 66. North winds
around 10 mph.
.WEDNESDAY...Sunny. Highs 88 to 93. North winds up to 10 mph in
the morning, becoming light in the afternoon.
.WEDNESDAY NIGHT...Mostly clear. Lows 60 to 67.
.THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs 92 to 98.
Lows 65 to 70.
.FRIDAY...Decreasing clouds. Highs 92 to 98.
.FRIDAY NIGHT...Partly cloudy. Lows 64 to 69.
.SATURDAY...Partly sunny. Highs 87 to 92.
.SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows 59 to 64. Highs
84 to 90.
&&
TEMPERATURE
Council 92 63 93
Cambridge 93 61 94
$$
=
ORZ064-171600-
Oregon Lower Treasure Valley-
230 AM MDT Mon Aug 17 2026 /130 AM PDT Mon Aug 17 2026/
.TODAY...Mostly cloudy. Highs 91 to 96. North winds up to 10 mph
this morning, becoming light this afternoon.
.TONIGHT...Mostly cloudy in the evening, then clearing. Lows
63 to 68. Northwest winds 10 to 15 mph.
.TUESDAY...Mostly sunny. Highs 93 to 98. Northwest winds 10 to
15 mph.
.TUESDAY NIGHT...Partly cloudy. Lows 62 to 68. Northwest winds
10 to 15 mph.
.WEDNESDAY...Sunny. Highs 92 to 97. North winds up to 10 mph.
.WEDNESDAY NIGHT...Increasing clouds. Lows 62 to 68.
.THURSDAY...Mostly sunny. Highs 95 to 100.
.THURSDAY NIGHT AND FRIDAY...Mostly cloudy. Lows 66 to 71. Highs
95 to 100.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows 66 to 71. Highs
90 to 95.
.SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows 61 to 66. Highs
88 to 93.
&&
TEMPERATURE
Ontario 93 63 95
$$
=
IDZ012-171600-
Lower Treasure Valley-
230 AM MDT Mon Aug 17 2026
.TODAY...Mostly cloudy. Highs 90 to 95. Southeast winds up to
10 mph this morning, shifting to northwest this afternoon.
.TONIGHT...Decreasing clouds. Patchy smoke in the evening. Lows
60 to 66. Northwest winds up to 10 mph.
.TUESDAY...Mostly sunny. Highs 92 to 97. Northwest winds up to
10 mph.
.TUESDAY NIGHT...Mostly clear. Lows 59 to 65. Northwest winds
10 to 15 mph.
.WEDNESDAY...Sunny. Highs 91 to 96. Northwest winds up to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows 59 to 66.
.THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs 95 to 100.
Lows 63 to 69.
.FRIDAY...Partly sunny. Highs 95 to 100.
.FRIDAY NIGHT THROUGH SATURDAY NIGHT...Partly cloudy. Lows 59 to
68. Highs 89 to 94.
.SUNDAY...Sunny. Highs 87 to 92.
&&
TEMPERATURE
Caldwell 92 60 94
$$
=
IDZ014-171600-
Upper Treasure Valley-
230 AM MDT Mon Aug 17 2026
.TODAY...Mostly cloudy this morning, then partly cloudy with a
slight chance of showers and thunderstorms this afternoon. Chance
of rain 20 percent. Highs 90 to 95. Southeast winds 10 to 15 mph
this morning, shifting to north this afternoon.
.TONIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms in the evening, then partly cloudy after midnight.
Chance of rain 20 percent. Lows 58 to 64. Northwest winds 10 to
15 mph.
.TUESDAY...Mostly sunny. Highs 90 to 95. Northwest winds 10 to
15 mph.
.TUESDAY NIGHT...Decreasing clouds. Lows 56 to 62. Northwest
winds 10 to 15 mph.
.WEDNESDAY...Sunny. Highs 91 to 96. Northwest winds up to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows 57 to 64.
.THURSDAY...Mostly sunny. Highs 96 to 101.
.THURSDAY NIGHT...Increasing clouds. Lows 63 to 68.
.FRIDAY...Mostly sunny. Highs 96 to 101.
.FRIDAY NIGHT...Partly cloudy with a slight chance of showers in
the evening, then mostly cloudy after midnight. Chance of rain
20 percent. Lows 62 to 68.
.SATURDAY THROUGH SUNDAY...Partly cloudy. Highs 86 to 94. Lows
59 to 64.
&&
TEMPERATURE
Boise 92 64 93
Mountain Home 94 59 94
$$
=
IDZ016-171600-
Western Magic Valley-
230 AM MDT Mon Aug 17 2026
.TODAY...Partly cloudy. A slight chance of showers and
thunderstorms this afternoon. Chance of rain 20 percent. Highs
87 to 92. East winds 10 to 15 mph this morning, shifting to
northwest this afternoon.
.TONIGHT...Mostly cloudy. A slight chance of showers and
thunderstorms in the evening. Chance of rain 20 percent. Lows
60 to 65. Southeast winds up to 10 mph.
.TUESDAY...Partly sunny. Highs 86 to 92. Southeast winds around
10 mph in the morning, shifting to west in the afternoon.
.TUESDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows 58 to 63. West winds 10 to 15 mph.
.WEDNESDAY...Sunny. Highs 87 to 92. Light winds in the morning,
becoming west around 10 mph in the afternoon.
.WEDNESDAY NIGHT...Mostly clear. Lows 58 to 64.
.THURSDAY...Mostly sunny. Highs 92 to 98.
.THURSDAY NIGHT...Mostly cloudy. Lows 64 to 69.
.FRIDAY...Partly cloudy. A slight chance of showers in the
afternoon. Chance of rain 20 percent. Highs 95 to 100.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers, mainly in the
evening. Chance of rain 30 percent. Lows 63 to 68.
.SATURDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
86 to 91.
.SATURDAY NIGHT...Mostly cloudy. Lows 60 to 65.
.SUNDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
81 to 86.
&&
TEMPERATURE
Jerome 87 63 86
Twin Falls 89 64 88
$$
=
IDZ029-171600-
Owyhee Mountains-
230 AM MDT Mon Aug 17 2026
.TODAY...Mostly cloudy. A slight chance of showers and
thunderstorms this afternoon. Patchy smoke this afternoon. Chance
of rain 20 percent. Highs 83 to 91.
.TONIGHT...Patchy smoke in the evening. Mostly cloudy with a
slight chance of showers and thunderstorms in the evening, then
partly cloudy after midnight. Chance of rain 20 percent. Lows
56 to 66.
.TUESDAY...Mostly sunny. Highs 84 to 91.
.TUESDAY NIGHT...Partly cloudy. Lows 55 to 65.
.WEDNESDAY...Sunny. Highs 84 to 92.
.WEDNESDAY NIGHT...Increasing clouds. Lows 57 to 67.
.THURSDAY THROUGH FRIDAY NIGHT...Partly cloudy. Highs 88 to 96.
Lows 59 to 69.
.SATURDAY THROUGH SUNDAY...Partly cloudy. Highs 80 to 89. Lows
54 to 64.
$$
=
IDZ015-171600-
Southwest Highlands-
230 AM MDT Mon Aug 17 2026
.TODAY...Mostly cloudy this morning, then partly cloudy with a
slight chance of showers and thunderstorms this afternoon. Chance
of rain 20 percent. Highs 86 to 91.
.TONIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms in the evening, then partly cloudy after midnight.
Chance of rain 20 percent. Lows 56 to 62.
.TUESDAY...Mostly sunny. Highs 87 to 92.
.TUESDAY NIGHT...Decreasing clouds. Lows 56 to 61.
.WEDNESDAY...Sunny. Highs 88 to 93.
.WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Lows 57 to 63.
Highs 93 to 98.
.THURSDAY NIGHT...Mostly cloudy. Lows 61 to 67.
.FRIDAY...Mostly sunny. Highs 92 to 97.
.FRIDAY NIGHT...Partly cloudy with a slight chance of showers in
the evening, then mostly cloudy after midnight. Chance of rain
20 percent. Lows 60 to 65.
.SATURDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
86 to 91.
.SATURDAY NIGHT...Partly cloudy. Lows 56 to 62. Breezy.
.SUNDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
82 to 87.
$$
=
IDZ030-171600-
Southern Twin Falls County-
230 AM MDT Mon Aug 17 2026
.TODAY...Partly cloudy. A slight chance of showers and
thunderstorms this afternoon. Chance of rain 20 percent. Highs
86 to 91.
.TONIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms in the evening, then partly cloudy after midnight.
Chance of rain 20 percent. Lows 60 to 65.
.TUESDAY...Decreasing clouds. Highs 86 to 91.
.TUESDAY NIGHT...Partly cloudy in the evening, then clearing.
Lows 58 to 64.
.WEDNESDAY...Sunny. Highs 87 to 92.
.WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Lows 60 to 67.
Highs 92 to 97.
.THURSDAY NIGHT...Mostly cloudy. Lows 66 to 71.
.FRIDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
93 to 98.
.FRIDAY NIGHT...Mostly cloudy. A slight chance of showers in the
evening. Chance of rain 20 percent. Lows 65 to 70.
.SATURDAY...Partly cloudy. A chance of showers with a slight
chance of thunderstorms in the afternoon. Chance of rain
30 percent. Highs 85 to 90.
.SATURDAY NIGHT...Mostly cloudy. A slight chance of showers in
the evening. Chance of rain 20 percent. Lows 60 to 65.
.SUNDAY...Partly cloudy. A chance of showers and thunderstorms in
the afternoon. Chance of rain 30 percent. Highs 81 to 86.
$$
=
ORZ062-171600-
Baker County-
130 AM PDT Mon Aug 17 2026
.TODAY...Patchy fog this morning. Mostly cloudy this morning,
then partly cloudy with a slight chance of showers and
thunderstorms this afternoon. Chance of rain 20 percent. Highs
84 to 93. Northwest winds up to 10 mph.
.TONIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms in the evening, then partly cloudy after midnight.
Patchy smoke after midnight. Chance of rain 20 percent. Lows
50 to 62. Northwest winds 10 to 15 mph with gusts to 25 mph.
.TUESDAY...Patchy smoke in the morning. Sunny. Highs 85 to 93.
Northwest winds 10 to 15 mph.
.TUESDAY NIGHT...Mostly clear. Lows 47 to 60. Northwest winds
10 to 15 mph.
.WEDNESDAY...Sunny. Highs 85 to 93. Northwest winds up to 10 mph.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 48 to 62.
Highs 90 to 98.
.THURSDAY NIGHT...Increasing clouds. Lows 55 to 66.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. Highs 89 to 98. Lows
52 to 64.
.SATURDAY...Mostly sunny. Highs 83 to 92.
.SATURDAY NIGHT...Partly cloudy. Areas of fog after midnight.
Lows 45 to 59.
.SUNDAY...Areas of fog in the morning. Sunny. Highs 81 to 89.
&&
TEMPERATURE
Baker City 88 50 88
$$
=
ORZ061-171600-
Harney County-
130 AM PDT Mon Aug 17 2026
.TODAY...Mostly cloudy. Highs 80 to 90. Light winds this morning,
becoming southwest 10 to 15 mph this afternoon.
.TONIGHT...Decreasing clouds. Patchy smoke after midnight. Lows
50 to 58. West winds 10 to 15 mph with gusts to 25 mph.
.TUESDAY...Mostly sunny. Highs 81 to 91. West winds 10 to 15 mph.
.TUESDAY NIGHT...Increasing clouds. Lows 50 to 57. Northwest
winds 10 to 15 mph.
.WEDNESDAY...Mostly sunny. Highs 82 to 92. Light winds in the
morning, becoming south up to 10 mph in the afternoon.
.WEDNESDAY NIGHT...Mostly clear. Lows 51 to 59.
.THURSDAY...Mostly sunny. Highs 85 to 95.
.THURSDAY NIGHT AND FRIDAY...Mostly cloudy. Lows 54 to 62. Highs
84 to 94.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows 51 to 59. Highs
78 to 88.
.SATURDAY NIGHT...Partly cloudy. Lows 45 to 55.
.SUNDAY...Sunny. Highs 77 to 87.
&&
TEMPERATURE
Burns 89 51 90
$$
=
ORZ063-171600-
Malheur County-
230 AM MDT Mon Aug 17 2026 /130 AM PDT Mon Aug 17 2026/
.TODAY...Mostly cloudy. Highs 88 to 93. North winds 10 to 15 mph.
.TONIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms in the evening, then partly cloudy after midnight.
Chance of rain 20 percent. Lows 54 to 64. Northwest winds 10 to
15 mph.
.TUESDAY...Partly sunny in the morning, then clearing. Highs
89 to 95. West winds 10 to 15 mph.
.TUESDAY NIGHT...Partly cloudy. Lows 53 to 63. Northwest winds
10 to 15 mph.
.WEDNESDAY...Sunny. Highs 89 to 96. Northwest winds up to 10 mph.
.WEDNESDAY NIGHT...Increasing clouds. Lows 55 to 65.
.THURSDAY...Mostly sunny. Highs 93 to 99.
.THURSDAY NIGHT AND FRIDAY...Mostly cloudy. Lows 59 to 68. Highs
93 to 98.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows 58 to 67. Highs
87 to 93.
.SATURDAY NIGHT AND SUNDAY...Partly cloudy. Lows 52 to 62. Highs
85 to 90.
$$
=