380
FPUS55 KBOI 280831
ZFPBOI

Zone Forecasts for Southwest Idaho/Southeast Oregon
National Weather Service Boise ID
230 AM MDT Mon Sep 28 2026

Spot temperatures are for today, tonight, and Tuesday.


IDZ011-281600-
West Central Mountains-
230 AM MDT Mon Sep 28 2026

.TODAY...Areas of fog this morning. Sunny. Highs 59 to 72.
.TONIGHT...Mostly clear. Areas of fog after midnight. Lows 34 to
44.
.TUESDAY...Areas of fog in the morning. Sunny. Highs 61 to 73.
.TUESDAY NIGHT...Mostly clear. Lows 38 to 48.
.WEDNESDAY...Patchy fog in the morning. Sunny. Highs 61 to 74.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Areas of fog
through the day. Lows 37 to 47. Highs 63 to 76.
.THURSDAY NIGHT...Increasing clouds. Lows 40 to 50.
.FRIDAY...Mostly sunny. Highs 64 to 76.
.FRIDAY NIGHT...Partly cloudy. Patchy fog after midnight. Lows
40 to 50.
.SATURDAY...Patchy fog in the morning. Sunny. Highs 64 to 76.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Areas of fog through
the day. Lows 39 to 49. Highs 65 to 77.

&&
               TEMPERATURE
McCall          66  35  67

$$
=

IDZ013-281600-
Boise Mountains-
230 AM MDT Mon Sep 28 2026

.TODAY...Partly sunny this morning, then clearing. Highs 60 to
75.
.TONIGHT...Mostly clear. Lows 29 to 44.
.TUESDAY...Sunny. Highs 61 to 76.
.TUESDAY NIGHT...Mostly clear. Lows 33 to 48.
.WEDNESDAY...Sunny. Highs 63 to 78.
.WEDNESDAY NIGHT...Clear. Lows 32 to 47.
.THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs 66 to 81. Lows
35 to 50.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs 67 to 82. Lows
36 to 51.
.SATURDAY THROUGH SUNDAY...Mostly clear. Highs 67 to 81. Lows
34 to 49.

&&
               TEMPERATURE
Idaho City      73  36  74

$$
=

IDZ028-281600-
Camas Prairie-
230 AM MDT Mon Sep 28 2026

.TODAY...Partly cloudy with isolated rain showers this morning,
then sunny this afternoon. Chance of rain 20 percent. Highs 67 to
72. Light winds this morning, becoming southwest 10 to 15 mph
with gusts to 25 mph this afternoon.
.TONIGHT...Mostly clear. Lows 34 to 39. Northwest winds 10 to
15 mph. Gusts to 25 mph in the evening.
.TUESDAY...Sunny. Highs 70 to 75. Light winds in the morning,
becoming west 10 to 15 mph with gusts to 30 mph in the afternoon.
.TUESDAY NIGHT...Mostly clear. Lows 37 to 42. Northwest winds
10 to 15 mph with gusts to 30 mph.
.WEDNESDAY...Sunny. Highs 72 to 77. Breezy. Northwest winds 10 to
20 mph. Gusts to 30 mph in the afternoon.
.WEDNESDAY NIGHT AND THURSDAY...Clear. Lows 36 to 41. Highs 72 to
77.
.THURSDAY NIGHT AND FRIDAY...Mostly clear. Lows 39 to 44. Highs
74 to 79.
.FRIDAY NIGHT...Partly cloudy. Lows 40 to 45.
.SATURDAY THROUGH SUNDAY...Mostly clear. Highs 71 to 77. Lows
38 to 43.

&&
               TEMPERATURE
Fairfield       71  34  74

$$
=

IDZ033-281600-
Upper Weiser River-
230 AM MDT Mon Sep 28 2026

.TODAY...Sunny. Highs 70 to 77. North winds up to 10 mph with
gusts to 20 mph.
.TONIGHT...Mostly clear. Lows 42 to 47. North winds up to 10 mph.
.TUESDAY...Sunny. Highs 70 to 77. Light winds.
.TUESDAY NIGHT...Mostly clear. Lows 46 to 51. Light winds.
.WEDNESDAY...Sunny. Highs 72 to 79. North winds up to 10 mph.
.WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Mostly clear. Lows
45 to 53. Highs 73 to 80.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs 74 to 80. Lows
48 to 53.
.SATURDAY THROUGH SUNDAY...Mostly clear. Highs 73 to 81. Lows
47 to 52.

&&
               TEMPERATURE
Council         76  43  76
Cambridge       77  42  77

$$
=

ORZ064-281600-
Oregon Lower Treasure Valley-
230 AM MDT Mon Sep 28 2026 /130 AM PDT Mon Sep 28 2026/

.TODAY...Sunny. Highs 75 to 80. Northwest winds up to 10 mph with
gusts to 20 mph.
.TONIGHT...Mostly clear. Lows 42 to 48. Northwest winds up to
10 mph with gusts to 20 mph.
.TUESDAY...Sunny. Highs 77 to 82. Light winds.
.TUESDAY NIGHT...Mostly clear. Lows 46 to 52. Northwest winds up
to 10 mph.
.WEDNESDAY...Sunny. Highs 76 to 81. Northwest winds up to 10 mph.
.WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Mostly clear. Lows
44 to 52. Highs 77 to 82.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs 77 to 82. Lows
47 to 53.
.SATURDAY THROUGH SUNDAY...Mostly clear. Highs 76 to 82. Lows
45 to 51.

&&
               TEMPERATURE
Ontario         78  42  78

$$
=

IDZ012-281600-
Lower Treasure Valley-
230 AM MDT Mon Sep 28 2026

.TODAY...Sunny. Highs 74 to 79. Northwest winds 10 to 15 mph with
gusts to 25 mph.
.TONIGHT...Mostly clear. Lows 43 to 48. Northwest winds 10 to
15 mph.
.TUESDAY...Sunny. Highs 74 to 79. Light winds in the morning,
becoming northwest 10 to 15 mph in the afternoon.
.TUESDAY NIGHT...Mostly clear. Lows 47 to 52. Northwest winds up
to 10 mph. Gusts to 20 mph in the evening.
.WEDNESDAY...Sunny. Highs 76 to 81. Northwest winds 10 to 15 mph.
.WEDNESDAY NIGHT...Clear. Lows 45 to 50.
.THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs 77 to 82. Lows
47 to 52.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs 78 to 83. Lows
48 to 53.
.SATURDAY THROUGH SUNDAY...Mostly clear. Highs 76 to 82. Lows
47 to 52.

&&
               TEMPERATURE
Caldwell        77  44  77

$$
=

IDZ014-281600-
Upper Treasure Valley-
230 AM MDT Mon Sep 28 2026

.TODAY...Partly sunny this morning, then clearing. Highs 72 to
77. Breezy. Northwest winds 10 to 20 mph with gusts to 30 mph.
.TONIGHT...Mostly clear. Lows 43 to 48. Breezy. Northwest winds
10 to 20 mph with gusts to 30 mph.
.TUESDAY...Sunny. Highs 73 to 78. Breezy. Northwest winds 10 to
20 mph. Gusts to 35 mph in the afternoon.
.TUESDAY NIGHT...Mostly clear. Lows 46 to 52. Breezy. Northwest
winds 10 to 20 mph. Gusts to 35 mph in the evening, decreasing to
25 mph after midnight.
.WEDNESDAY...Sunny. Highs 75 to 80. Windy. Northwest winds 10 to
15 mph with gusts to 25 mph in the morning, increasing to 15 to
25 mph with gusts to 35 mph in the afternoon.
.WEDNESDAY NIGHT...Clear. Lows 44 to 51.
.THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs 78 to 83. Lows
46 to 54.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs 80 to 85. Lows
47 to 55.
.SATURDAY THROUGH SUNDAY...Mostly clear. Highs 75 to 83. Lows
45 to 53.

&&
               TEMPERATURE
Boise           74  48  75
Mountain Home   74  45  76

$$
=

IDZ016-281600-
Western Magic Valley-
230 AM MDT Mon Sep 28 2026

.TODAY...Partly sunny this morning, then clearing. Highs 68 to
73. West winds 10 to 15 mph with gusts to 30 mph.
.TONIGHT...Mostly clear. Lows 43 to 48. Breezy. West winds 10 to
20 mph with gusts to 30 mph.
.TUESDAY...Sunny. Highs 70 to 75. Breezy. West winds 10 to 20 mph
with gusts to 30 mph.
.TUESDAY NIGHT...Mostly clear. Lows 46 to 51. Breezy. West winds
10 to 20 mph with gusts to 35 mph.
.WEDNESDAY...Sunny. Highs 72 to 77. Windy. West winds 15 to
25 mph with gusts to 35 mph.
.WEDNESDAY NIGHT AND THURSDAY...Clear. Lows 43 to 48. Highs 75 to
80. Breezy.
.THURSDAY NIGHT AND FRIDAY...Mostly clear. Lows 46 to 51. Highs
78 to 83.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows 47 to 52. Highs
73 to 78.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows 45 to 50. Highs
76 to 81.

&&
               TEMPERATURE
Jerome          69  46  70
Twin Falls      69  45  70

$$
=

IDZ029-281600-
Owyhee Mountains-
230 AM MDT Mon Sep 28 2026

.TODAY...Partly sunny this morning, then clearing. Highs 66 to
71.
.TONIGHT...Mostly clear. Lows 39 to 49.
.TUESDAY...Sunny. Highs 69 to 74.
.TUESDAY NIGHT...Mostly clear. Lows 43 to 53.
.WEDNESDAY...Sunny. Highs 69 to 74.
.WEDNESDAY NIGHT...Clear. Lows 42 to 51.
.THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs 71 to 80. Lows
47 to 53.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs 72 to 80. Lows
46 to 53.
.SATURDAY THROUGH SUNDAY...Mostly clear. Highs 70 to 80. Lows
44 to 51.

$$
=

IDZ015-281600-
Southwest Highlands-
230 AM MDT Mon Sep 28 2026

.TODAY...Partly sunny this morning, then clearing. Highs 64 to
70. Breezy.
.TONIGHT...Mostly clear. Lows 37 to 45. Breezy.
.TUESDAY...Sunny. Highs 69 to 74. Breezy.
.TUESDAY NIGHT...Mostly clear. Lows 40 to 48.
.WEDNESDAY...Sunny. Highs 71 to 76. Breezy.
.WEDNESDAY NIGHT...Clear. Lows 40 to 46.
.THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs 76 to 81. Lows
45 to 50.
.FRIDAY THROUGH SATURDAY...Partly cloudy. Highs 73 to 83. Lows
45 to 51.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows 43 to 48. Highs
76 to 81.

$$
=

IDZ030-281600-
Southern Twin  Falls County-
230 AM MDT Mon Sep 28 2026

.TODAY...Partly sunny this morning, then clearing. Highs 65 to
70.
.TONIGHT...Mostly clear. Lows 42 to 47.
.TUESDAY...Sunny. Highs 68 to 73.
.TUESDAY NIGHT...Mostly clear. Lows 45 to 50. Breezy.
.WEDNESDAY...Sunny. Highs 69 to 74. Breezy.
.WEDNESDAY NIGHT...Clear. Lows 42 to 47.
.THURSDAY THROUGH FRIDAY...Mostly clear. Highs 75 to 83. Lows
47 to 52.
.FRIDAY NIGHT AND SATURDAY...Partly cloudy. Lows 48 to 53. Highs
73 to 78.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows 44 to 49. Highs
75 to 80.

$$
=

ORZ062-281600-
Baker County-
130 AM PDT Mon Sep 28 2026

.TODAY...Areas of fog this morning. Sunny. Highs 67 to 74.
Northwest winds 10 to 15 mph. Gusts to 25 mph this afternoon.
.TONIGHT...Mostly clear. Lows 31 to 45. Northwest winds 10 to
15 mph. Gusts to 25 mph in the evening.
.TUESDAY...Sunny. Highs 70 to 77. Northwest winds up to 10 mph.
Gusts to 20 mph in the afternoon.
.TUESDAY NIGHT...Decreasing clouds. Patchy fog after midnight.
Lows 38 to 50. Northwest winds up to 10 mph with gusts to 20 mph.
.WEDNESDAY...Areas of fog in the morning. Sunny. Highs 69 to 76.
Northwest winds up to 10 mph with gusts to 20 mph.
.WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Mostly clear. Lows
35 to 50. Highs 72 to 79.
.FRIDAY...Mostly sunny. Highs 72 to 79.
.FRIDAY NIGHT...Partly cloudy. Areas of fog after midnight. Lows
38 to 50.
.SATURDAY...Areas of fog in the morning. Sunny. Highs 71 to 78.
.SATURDAY NIGHT AND SUNDAY...Mostly clear. Lows 38 to 50. Highs
73 to 80.

&&
               TEMPERATURE
Baker City      70  31  73

$$
=

ORZ061-281600-
Harney County-
130 AM PDT Mon Sep 28 2026

.TODAY...Patchy fog this morning. Sunny. Highs 66 to 73.
Northwest winds 10 to 15 mph.
.TONIGHT...Mostly clear. Lows 31 to 42. Northwest winds 10 to
15 mph with gusts to 25 mph in the evening, becoming light after
midnight.
.TUESDAY...Sunny. Highs 69 to 76. West winds up to 10 mph. Gusts
to 20 mph in the afternoon.
.TUESDAY NIGHT...Mostly clear. Lows 36 to 46. Northwest winds up
to 10 mph. Gusts to 20 mph in the evening.
.WEDNESDAY...Patchy fog in the morning. Sunny. Highs 69 to 76.
Northwest winds up to 10 mph.
.WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Mostly clear. Lows
35 to 48. Highs 74 to 82.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs 73 to 80. Lows
37 to 47.
.SATURDAY THROUGH SUNDAY...Mostly clear. Highs 70 to 80. Lows
37 to 47.

&&
               TEMPERATURE
Burns           72  31  76

$$
=

ORZ063-281600-
Malheur County-
230 AM MDT Mon Sep 28 2026 /130 AM PDT Mon Sep 28 2026/

.TODAY...Sunny. Highs 69 to 77. Northwest winds 10 to 15 mph.
.TONIGHT...Mostly clear. Lows 37 to 47. Northwest winds 10 to
15 mph.
.TUESDAY...Sunny. Highs 72 to 79. West winds up to 10 mph with
gusts to 20 mph.
.TUESDAY NIGHT...Mostly clear. Lows 42 to 52. Northwest winds up
to 10 mph with gusts to 20 mph.
.WEDNESDAY...Sunny. Highs 73 to 79. Northwest winds up to 10 mph.
.WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Mostly clear. Lows
41 to 51. Highs 75 to 83.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs 76 to 83. Lows
43 to 52.
.SATURDAY THROUGH SUNDAY...Mostly clear. Highs 73 to 81. Lows
41 to 51.

$$
=