Zone Forecast Product
Issued by NWS Boise, ID

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FPUS55 KBOI 212108
ZFPBOI

Zone Forecasts for Southwest Idaho/Southeast Oregon
National Weather Service Boise ID
307 PM MDT Thu Aug 21 2025

Spot temperatures are for tonight, Friday, Friday night, and
Saturday.


IDZ011-220500-
West Central Mountains-
307 PM MDT Thu Aug 21 2025

.TONIGHT...Mostly clear. Areas of smoke. Lows 48 to 58.
.FRIDAY...Sunny. Areas of smoke. Highs 80 to 93.
.FRIDAY NIGHT...Mostly clear. Areas of smoke. Lows 51 to 62.
.SATURDAY...Areas of smoke in the morning. Sunny. Highs 83 to 97.
.SATURDAY NIGHT...Increasing clouds. Lows 55 to 67.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy. Highs 78 to 93. Lows
55 to 66.
.MONDAY AND MONDAY NIGHT...Mostly cloudy. A slight chance of
showers and thunderstorms. Chance of rain 20 percent. Highs 75 to
90. Lows 53 to 63.
.TUESDAY...Partly cloudy. A chance of showers with a slight
chance of thunderstorms in the afternoon. Chance of rain
30 percent. Highs 74 to 89.
.TUESDAY NIGHT...Decreasing clouds. A slight chance of
thunderstorms in the evening. A slight chance of rain showers.
Chance of rain 20 percent. Lows 51 to 61.
.WEDNESDAY...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
73 to 88.
.WEDNESDAY NIGHT...Decreasing clouds. A slight chance of
thunderstorms in the evening. A chance of showers. Chance of rain
30 percent. Lows 51 to 61.
.THURSDAY...Partly cloudy with a chance of rain showers. A slight
chance of thunderstorms in the afternoon. Chance of rain
40 percent. Highs 71 to 85.

&&
                  TEMPERATURE
McCall          48  87  51  91

$$
=

IDZ013-220500-
Boise Mountains-
307 PM MDT Thu Aug 21 2025

.TONIGHT...Mostly clear. Areas of smoke after midnight. Lows
43 to 58.
.FRIDAY...Sunny. Areas of smoke. Highs 82 to 96.
.FRIDAY NIGHT...Mostly clear. Areas of smoke. Lows 46 to 61.
.SATURDAY...Areas of smoke in the morning. Sunny. Highs 85 to
100.
.SATURDAY NIGHT...Increasing clouds. Lows 51 to 66.
.SUNDAY...Mostly cloudy. Highs 79 to 94.
.SUNDAY NIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms. Chance of rain 20 percent. Lows 50 to 65.
.MONDAY THROUGH TUESDAY NIGHT...Mostly cloudy with a chance of
rain showers with a slight chance of thunderstorms. Chance of
rain 30 percent. Highs 76 to 91. Lows 46 to 61.
.WEDNESDAY THROUGH THURSDAY...Mostly cloudy with a chance of rain
showers with a slight chance of thunderstorms. Chance of rain
40 percent. Highs 73 to 88. Lows 45 to 60.

&&
                  TEMPERATURE
Idaho City      47  95  50  98

$$
=

IDZ028-220500-
Camas Prairie-
307 PM MDT Thu Aug 21 2025

.TONIGHT...Partly cloudy. Lows 46 to 52. Northwest winds 10 to
15 mph. Gusts to 25 mph this evening.
.FRIDAY...Sunny. Areas of smoke in the afternoon. Highs 88 to 93.
Light winds in the morning, becoming west 10 to 15 mph in the
afternoon.
.FRIDAY NIGHT...Mostly clear. Areas of smoke. Lows 49 to 55.
Northwest winds 10 to 15 mph.
.SATURDAY...Sunny. Highs 91 to 96. Light winds in the morning,
becoming southwest around 10 mph in the afternoon.
.SATURDAY NIGHT...Increasing clouds. Lows 54 to 61. Northwest
winds 10 to 15 mph.
.SUNDAY...Mostly cloudy. Highs 84 to 89.
.SUNDAY NIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms. Chance of rain 20 percent. Lows 52 to 58.
.MONDAY AND MONDAY NIGHT...Mostly cloudy. A chance of showers
with a slight chance of thunderstorms. Chance of rain 30 percent.
Highs 81 to 86. Lows 49 to 55.
.TUESDAY...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 40 percent. Highs
78 to 83.
.TUESDAY NIGHT...A slight chance of thunderstorms in the evening.
Mostly cloudy with a chance of showers. Chance of rain
30 percent. Lows 48 to 54.
.WEDNESDAY THROUGH THURSDAY...Mostly cloudy with a chance of
showers with a slight chance of thunderstorms. Chance of rain
40 percent. Highs 75 to 82. Lows 47 to 53.

&&
                  TEMPERATURE
Fairfield       46  91  49  93

$$
=

IDZ033-220500-
Upper Weiser River-
307 PM MDT Thu Aug 21 2025

.TONIGHT...Mostly clear. Lows 58 to 63. North winds 10 to 15 mph.
.FRIDAY...Sunny. Areas of smoke. Highs 91 to 96. North winds
10 to 15 mph in the morning, becoming light in the afternoon.
.FRIDAY NIGHT...Mostly clear. Areas of smoke. Lows 61 to 66.
North winds up to 10 mph.
.SATURDAY...Areas of smoke in the morning. Sunny. Highs 94 to
100. Northeast winds up to 10 mph in the morning, becoming light
in the afternoon.
.SATURDAY NIGHT...Mostly cloudy. Lows 67 to 72. North winds up to
10 mph.
.SUNDAY THROUGH MONDAY...Mostly cloudy. Highs 88 to 96. Lows
66 to 71.
.MONDAY NIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms in the evening, then partly cloudy after midnight.
Chance of rain 20 percent. Lows 64 to 69.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. A slight chance of
showers and thunderstorms. Chance of rain 20 percent. Highs 87 to
93. Lows 62 to 67.
.WEDNESDAY...Partly cloudy. A chance of showers with a slight
chance of thunderstorms in the afternoon. Chance of rain
30 percent. Highs 86 to 92.
.WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy. A chance of
showers with a slight chance of thunderstorms. Chance of rain
30 percent. Lows 62 to 67. Highs 83 to 89.

&&
                  TEMPERATURE
Council         60  96  64 100
Cambridge       58  96  61  99

$$
=

IDZ012-ORZ064-220500-
Lower Treasure Valley-Oregon Lower Treasure Valley-
307 PM MDT Thu Aug 21 2025 /207 PM PDT Thu Aug 21 2025/

.TONIGHT...Mostly clear. Lows 57 to 63. Northwest winds up to
10 mph.
.FRIDAY...Sunny. Areas of smoke. Highs 93 to 98. Northwest winds
up to 10 mph.
.FRIDAY NIGHT...Mostly clear. Areas of smoke after midnight. Lows
59 to 65. North winds up to 10 mph.
.SATURDAY...Areas of smoke in the morning. Sunny. Highs 96 to
101. Light winds.
.SATURDAY NIGHT...Increasing clouds. Lows 67 to 72. Northwest
winds up to 10 mph.
.SUNDAY THROUGH MONDAY...Mostly cloudy. Highs 90 to 97. Lows
66 to 71.
.MONDAY NIGHT THROUGH TUESDAY NIGHT...Partly cloudy with a slight
chance of showers and thunderstorms. Chance of rain 20 percent.
Lows 63 to 69. Highs 89 to 95.
.WEDNESDAY...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
88 to 93.
.WEDNESDAY NIGHT...Mostly cloudy with a chance of showers with a
slight chance of thunderstorms in the evening, then partly cloudy
with a slight chance of showers after midnight. Chance of rain
40 percent. Lows 62 to 67.
.THURSDAY...Partly cloudy with a chance of showers. A slight
chance of thunderstorms in the afternoon. Chance of rain
30 percent. Highs 85 to 91.

&&
                  TEMPERATURE
Caldwell        57  96  59  98
Ontario         59  97  61  99

$$
=

IDZ014-220500-
Upper Treasure Valley-
307 PM MDT Thu Aug 21 2025

.TONIGHT...Mostly clear. Lows 55 to 60. Northwest winds 10 to
15 mph. Gusts to 25 mph this evening.
.FRIDAY...Sunny. Areas of smoke. Highs 93 to 98. Northwest winds
up to 10 mph with gusts to 20 mph.
.FRIDAY NIGHT...Mostly clear. Areas of smoke. Lows 58 to 64.
North winds up to 10 mph with gusts to 20 mph.
.SATURDAY...Sunny. Highs 97 to 102. Light winds in the morning,
becoming southwest around 10 mph in the afternoon.
.SATURDAY NIGHT...Increasing clouds. Lows 66 to 71. Northwest
winds up to 10 mph with gusts to 20 mph.
.SUNDAY THROUGH MONDAY...Mostly cloudy with a slight chance of
showers and thunderstorms. Chance of rain 20 percent. Highs 89 to
96. Lows 63 to 68.
.MONDAY NIGHT...A slight chance of thunderstorms in the evening.
Partly cloudy with a slight chance of showers. Chance of rain
20 percent. Lows 61 to 67.
.TUESDAY...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
88 to 93.
.TUESDAY NIGHT...Decreasing clouds. A slight chance of
thunderstorms in the evening. A chance of showers. Chance of rain
30 percent. Lows 60 to 66.
.WEDNESDAY THROUGH THURSDAY...Mostly cloudy with a chance of
showers with a slight chance of thunderstorms. Chance of rain
40 percent. Highs 84 to 92. Lows 59 to 65.

&&
                  TEMPERATURE
Boise           60  96  64  98
Mountain Home   57  98  60 101

$$
=

IDZ016-220500-
Western Magic Valley-
307 PM MDT Thu Aug 21 2025

.TONIGHT...Partly cloudy. Lows 56 to 63. Southwest winds 10 to
15 mph. Gusts to 25 mph this evening.
.FRIDAY...Sunny. Highs 91 to 96. South winds up to 10 mph in the
morning, shifting to northwest around 10 mph in the afternoon.
Gusts to 20 mph.
.FRIDAY NIGHT...Mostly clear. Areas of smoke. Lows 58 to 63. West
winds around 10 mph in the evening, shifting to south after
midnight. Gusts to 20 mph.
.SATURDAY...Areas of smoke in the morning. Sunny. Highs 94 to 99.
Northeast winds around 10 mph.
.SATURDAY NIGHT...Increasing clouds. Lows 64 to 69. West winds
around 10 mph with gusts to 20 mph.
.SUNDAY THROUGH MONDAY NIGHT...Mostly cloudy with a chance of
showers with a slight chance of thunderstorms. Chance of rain
30 percent. Highs 84 to 93. Lows 59 to 66.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy. A chance of showers
with a slight chance of thunderstorms. Chance of rain 40 percent.
Highs 82 to 88. Lows 59 to 64.
.WEDNESDAY...A chance of showers in the morning, then showers
likely with a slight chance of thunderstorms in the afternoon.
Chance of rain 60 percent. Highs 80 to 86.
.WEDNESDAY NIGHT...A slight chance of thunderstorms in the
evening. Mostly cloudy with a chance of showers. Chance of rain
40 percent. Lows 57 to 62.
.THURSDAY...Partly cloudy with a chance of showers. A slight
chance of thunderstorms in the afternoon. Chance of rain
50 percent. Highs 78 to 84.

&&
                  TEMPERATURE
Jerome          59  92  61  96
Twin Falls      63  92  63  95

$$
=

IDZ029-220500-
Owyhee Mountains-
307 PM MDT Thu Aug 21 2025

.TONIGHT...Decreasing clouds. Lows 53 to 62.
.FRIDAY...Sunny. Areas of smoke in the afternoon. Highs 86 to 93.
.FRIDAY NIGHT...Areas of smoke in the evening. Partly cloudy.
Lows 58 to 66.
.SATURDAY...Mostly sunny. Highs 88 to 97.
.SATURDAY NIGHT...Mostly cloudy. Lows 64 to 72.
.SUNDAY THROUGH MONDAY NIGHT...Mostly cloudy with a chance of
showers with a slight chance of thunderstorms. Chance of rain
30 percent. Highs 82 to 89. Lows 58 to 68.
.TUESDAY...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 40 percent. Highs
81 to 86.
.TUESDAY NIGHT...Mostly cloudy. A chance of showers with a slight
chance of thunderstorms in the evening, then a slight chance of
showers after midnight. Chance of rain 30 percent. Lows 56 to 65.
.WEDNESDAY...A chance of showers in the morning, then showers
likely with a slight chance of thunderstorms in the afternoon.
Chance of rain 60 percent. Highs 79 to 84.
.WEDNESDAY NIGHT...A slight chance of thunderstorms in the
evening. Mostly cloudy with a chance of showers. Chance of rain
40 percent. Lows 54 to 63.
.THURSDAY...Partly cloudy with a chance of showers. A slight
chance of thunderstorms in the afternoon. Chance of rain
50 percent. Highs 76 to 81.

$$
=

IDZ015-220500-
Southwest Highlands-
307 PM MDT Thu Aug 21 2025

.TONIGHT...Decreasing clouds. Lows 55 to 60.
.FRIDAY...Sunny. Highs 89 to 95.
.FRIDAY NIGHT...Partly cloudy. Areas of smoke. Lows 59 to 64.
.SATURDAY...Mostly sunny. Highs 92 to 98.
.SATURDAY NIGHT...Mostly cloudy. Lows 64 to 69.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy with a chance of showers
with a slight chance of thunderstorms. Chance of rain 30 percent.
Highs 85 to 91. Lows 58 to 63.
.MONDAY...Partly cloudy with a chance of showers. A slight chance
of thunderstorms in the afternoon. Chance of rain 40 percent.
Highs 83 to 88.
.MONDAY NIGHT...Mostly cloudy. A chance of showers with a slight
chance of thunderstorms in the evening, then a slight chance of
showers after midnight. Chance of rain 30 percent. Lows 56 to 62.
.TUESDAY...A chance of showers in the morning, then showers
likely with a slight chance of thunderstorms in the afternoon.
Chance of rain 60 percent. Highs 81 to 86.
.TUESDAY NIGHT...A slight chance of thunderstorms in the evening.
Mostly cloudy with a chance of showers. Chance of rain
40 percent. Lows 55 to 60.
.WEDNESDAY...Partly cloudy with a chance of showers in the
morning, then showers likely with a slight chance of
thunderstorms in the afternoon. Chance of rain 60 percent. Highs
78 to 85.
.WEDNESDAY NIGHT...A slight chance of thunderstorms in the
evening. Mostly cloudy with a chance of showers. Chance of rain
50 percent. Lows 53 to 60.
.THURSDAY...Partly cloudy with a chance of showers in the
morning, then showers likely with a slight chance of
thunderstorms in the afternoon. Chance of rain 60 percent. Highs
76 to 83.

$$
=

IDZ030-220500-
Southern Twin  Falls County-
307 PM MDT Thu Aug 21 2025

.TONIGHT...Mostly cloudy. Lows 57 to 62.
.FRIDAY...Sunny. Highs 89 to 94.
.FRIDAY NIGHT...Increasing clouds. Areas of smoke after midnight.
Lows 59 to 64.
.SATURDAY...Mostly sunny. Highs 92 to 97.
.SATURDAY NIGHT...Mostly cloudy. Lows 65 to 70.
.SUNDAY...Decreasing clouds. A chance of showers. A slight chance
of thunderstorms in the afternoon. Chance of rain 50 percent.
Highs 85 to 90.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers with a
slight chance of thunderstorms. Chance of rain 40 percent. Lows
59 to 64.
.MONDAY...A chance of showers in the morning, then showers likely
with a slight chance of thunderstorms in the afternoon. Chance of
rain 60 percent. Highs 82 to 87.
.MONDAY NIGHT...Mostly cloudy with a chance of showers with a
slight chance of thunderstorms in the evening, then partly cloudy
with a slight chance of showers after midnight. Chance of rain
40 percent. Lows 56 to 61.
.TUESDAY...Partly cloudy with a chance of showers in the morning,
then showers likely with a slight chance of thunderstorms in the
afternoon. Chance of rain 70 percent. Highs 80 to 85.
.TUESDAY NIGHT...A slight chance of thunderstorms in the evening.
Mostly cloudy with a chance of showers. Chance of rain
50 percent. Lows 56 to 61.
.WEDNESDAY...Partly cloudy with a chance of showers in the
morning, then showers with a slight chance of thunderstorms in
the afternoon. Chance of rain 80 percent. Highs 78 to 83.
.WEDNESDAY NIGHT...Showers likely with a slight chance of
thunderstorms in the evening, then a chance of showers after
midnight. Chance of rain 60 percent. Lows 55 to 60.
.THURSDAY...Partly cloudy with a chance of showers in the
morning, then showers likely with a slight chance of
thunderstorms in the afternoon. Chance of rain 70 percent. Highs
76 to 81.

$$
=

ORZ062-220500-
Baker County-
207 PM PDT Thu Aug 21 2025

.TONIGHT...Mostly clear. Lows 47 to 60. Northwest winds up to
10 mph with gusts to 20 mph.
.FRIDAY...Sunny. Highs 88 to 97. Northwest winds up to 10 mph.
.FRIDAY NIGHT...Mostly clear. Areas of smoke after midnight. Lows
50 to 64. North winds up to 10 mph.
.SATURDAY...Sunny. Highs 92 to 101. Northwest winds up to 10 mph
in the morning, becoming light in the afternoon.
.SATURDAY NIGHT...Mostly cloudy. Lows 56 to 70. North winds up to
10 mph.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy. Highs 87 to 96. Lows
56 to 69.
.MONDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
85 to 94.
.MONDAY NIGHT...Decreasing clouds. Lows 55 to 67.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. A slight chance of
showers and thunderstorms. Chance of rain 20 percent. Highs 85 to
95. Lows 54 to 66.
.WEDNESDAY THROUGH THURSDAY...Partly cloudy with a chance of rain
showers with a slight chance of thunderstorms. Chance of rain
30 percent. Highs 82 to 92. Lows 53 to 64.

&&
                  TEMPERATURE
Baker City      47  91  50  95

$$
=

ORZ061-220500-
Harney County-
207 PM PDT Thu Aug 21 2025

.TONIGHT...Mostly clear. Lows 47 to 58. Northeast winds up to
10 mph.
.FRIDAY...Sunny. Highs 86 to 96. Northeast winds up to 10 mph.
.FRIDAY NIGHT...Partly cloudy. Lows 53 to 64. Northeast winds up
to 10 mph with gusts to 20 mph.
.SATURDAY...Mostly sunny. Highs 87 to 97. East winds up to
10 mph.
.SATURDAY 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 57 to 68.
Northeast winds around 10 mph in the evening, becoming light
after midnight.
.SUNDAY...Mostly 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 40 percent. Highs
80 to 90.
.SUNDAY NIGHT...Mostly cloudy. A slight chance of showers and
thunderstorms in the evening. Chance of rain 20 percent. Lows
53 to 63.
.MONDAY...Partly cloudy. A chance of showers with a slight chance
of thunderstorms in the afternoon. Chance of rain 40 percent.
Highs 79 to 89.
.MONDAY NIGHT...Mostly cloudy. A chance of showers with a slight
chance of thunderstorms in the evening. Chance of rain
30 percent. Lows 51 to 61.
.TUESDAY...Partly cloudy. A chance of showers with a slight
chance of thunderstorms in the afternoon. Chance of rain
40 percent. Highs 78 to 88.
.TUESDAY NIGHT...Mostly cloudy. A chance of showers with a slight
chance of thunderstorms in the evening, then a slight chance of
showers after midnight. Chance of rain 30 percent. Lows 51 to 60.
.WEDNESDAY...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 50 percent. Highs
77 to 88.
.WEDNESDAY NIGHT...A slight chance of thunderstorms in the
evening. Mostly cloudy with a chance of showers. Chance of rain
40 percent. Lows 49 to 57.
.THURSDAY...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
74 to 85.

&&
                  TEMPERATURE
Burns           47  94  53  96

$$
=

ORZ063-220500-
Malheur County-
307 PM MDT Thu Aug 21 2025 /207 PM PDT Thu Aug 21 2025/

.TONIGHT...Mostly clear. Lows 52 to 62. North winds up to 10 mph.
.FRIDAY...Sunny. Highs 91 to 97. North winds up to 10 mph with
gusts to 20 mph.
.FRIDAY NIGHT...Partly cloudy. Areas of smoke after midnight.
Lows 56 to 66. North winds up to 10 mph with gusts to 20 mph.
.SATURDAY...Mostly sunny. Highs 94 to 99. Northeast winds up to
10 mph.
.SATURDAY NIGHT...Mostly cloudy. Lows 63 to 72. Northeast winds
up to 10 mph in the evening, shifting to west after midnight.
.SUNDAY...Mostly 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
87 to 94.
.SUNDAY NIGHT...Mostly cloudy. A slight chance of showers and
thunderstorms in the evening. Chance of rain 20 percent. Lows
58 to 68.
.MONDAY AND MONDAY NIGHT...Mostly cloudy. A chance of showers
with a slight chance of thunderstorms. Chance of rain 30 percent.
Highs 86 to 93. Lows 57 to 67.
.TUESDAY...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
85 to 93.
.TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy. A chance of showers
with a slight chance of thunderstorms. Chance of rain 30 percent.
Lows 56 to 66. Highs 83 to 91.
.WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy. A chance of
showers with a slight chance of thunderstorms. Chance of rain
40 percent. Lows 54 to 64. Highs 80 to 88.

$$
=