608
FPUS55 KBOI 192031
ZFPBOI

Zone Forecasts for Southwest Idaho/Southeast Oregon
National Weather Service Boise ID
230 PM MDT Sat Sep 19 2026

Spot temperatures are for tonight, Sunday, Sunday night, and
Monday.


IDZ011-200400-
West Central Mountains-
230 PM MDT Sat Sep 19 2026

.TONIGHT...Mostly clear. Patchy fog this evening. Areas of fog
after midnight. Lows 39 to 49.
.SUNDAY...Areas of fog in the morning. Sunny. Highs 66 to 79.
.SUNDAY NIGHT...Mostly clear. Patchy fog after midnight. Lows
42 to 52.
.MONDAY...Areas of fog in the morning. Sunny. Highs 68 to 81.
.MONDAY NIGHT...Increasing clouds. Lows 43 to 53.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs 68 to 81. Lows
44 to 54.
.WEDNESDAY...Sunny. Highs 66 to 79.
.WEDNESDAY NIGHT...Increasing clouds. Lows 43 to 53.
.THURSDAY...Sunny. Highs 67 to 80.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows 44 to 54. Highs
64 to 77.
.FRIDAY NIGHT...Increasing clouds. Lows 40 to 50.
.SATURDAY...Partly cloudy. A slight chance of rain showers in the
morning. Chance of rain 20 percent. Highs 59 to 71.

&&
                  TEMPERATURE
McCall          40  73  42  75

$$
=

IDZ013-200400-
Boise Mountains-
230 PM MDT Sat Sep 19 2026

.TONIGHT...Mostly clear. Patchy fog this evening. Areas of fog
after midnight. Lows 34 to 49.
.SUNDAY...Areas of fog in the morning. Sunny. Highs 67 to 80.
.SUNDAY NIGHT...Mostly clear. Lows 36 to 51.
.MONDAY...Patchy fog in the morning. Sunny. Highs 70 to 84.
.MONDAY NIGHT...Partly cloudy. Lows 39 to 54.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs 70 to 85. Lows
39 to 54.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs 71 to 86. Lows
39 to 54.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows 39 to
54. Highs 69 to 83.
.SATURDAY...Mostly sunny. Highs 63 to 77.

&&
                  TEMPERATURE
Idaho City      40  79  42  83

$$
=

IDZ028-200400-
Camas Prairie-
230 PM MDT Sat Sep 19 2026

.TONIGHT...Partly cloudy this evening, then clearing. Areas of
fog after midnight. Lows 34 to 41. Light winds.
.SUNDAY...Areas of fog in the morning. Sunny. Highs 68 to 73.
Light winds.
.SUNDAY NIGHT...Mostly clear. Lows 38 to 44. Light winds.
.MONDAY...Sunny. Highs 73 to 78. East winds around 10 mph with
gusts to 20 mph.
.MONDAY NIGHT...Partly cloudy. Lows 41 to 47. Northeast winds up
to 10 mph.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs 75 to 80. Lows
43 to 48.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs 75 to 82. Lows
43 to 48.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows 41 to
50. Highs 76 to 81.
.SATURDAY...Mostly sunny. Highs 71 to 76.

&&
                  TEMPERATURE
Fairfield       35  71  39  76

$$
=

IDZ033-200400-
Upper Weiser River-
230 PM MDT Sat Sep 19 2026

.TONIGHT...Mostly clear. Lows 49 to 54. Light winds.
.SUNDAY...Sunny. Highs 75 to 82. Light winds.
.SUNDAY NIGHT...Mostly clear. Lows 51 to 56. Light winds.
.MONDAY...Sunny. Highs 78 to 85. Light winds.
.MONDAY NIGHT...Increasing clouds. Lows 52 to 57. Light winds.
.TUESDAY...Mostly sunny. Highs 80 to 86.
.TUESDAY NIGHT AND WEDNESDAY...Mostly clear. Lows 53 to 58. Highs
79 to 84.
.WEDNESDAY NIGHT...Increasing clouds. Lows 52 to 57.
.THURSDAY...Sunny. Highs 79 to 84.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows 52 to 57. Highs
76 to 82.
.FRIDAY NIGHT...Increasing clouds. Lows 49 to 54.
.SATURDAY...Mostly sunny. Highs 70 to 76.

&&
                  TEMPERATURE
Council         50  81  52  84
Cambridge       50  82  51  85

$$
=

ORZ064-200400-
Oregon Lower Treasure Valley-
230 PM MDT Sat Sep 19 2026 /130 PM PDT Sat Sep 19 2026/

.TONIGHT...Mostly clear. Lows 50 to 56. Light winds.
.SUNDAY...Sunny. Highs 80 to 85. Light winds.
.SUNDAY NIGHT...Mostly clear. Lows 49 to 55. Light winds.
.MONDAY...Sunny. Highs 82 to 87. Light winds.
.MONDAY NIGHT...Partly cloudy. Lows 51 to 57. Light winds.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Highs 82 to 88. Lows
52 to 58.
.WEDNESDAY NIGHT...Partly cloudy. Lows 50 to 56.
.THURSDAY...Sunny. Highs 81 to 86.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows 48 to
56. Highs 79 to 84.
.SATURDAY...Mostly sunny. Highs 74 to 79.

&&
                  TEMPERATURE
Ontario         50  82  49  85

$$
=

IDZ012-200400-
Lower Treasure Valley-
230 PM MDT Sat Sep 19 2026

.TONIGHT...Mostly clear. Lows 49 to 54. North winds up to 10 mph
this evening, becoming light after midnight.
.SUNDAY...Areas of fog in the morning. Sunny. Highs 79 to 84.
Light winds.
.SUNDAY NIGHT...Mostly clear. Lows 50 to 55. Light winds.
.MONDAY...Sunny. Highs 82 to 87. Light winds in the morning,
becoming southeast 10 to 15 mph in the afternoon.
.MONDAY NIGHT...Partly cloudy. Lows 52 to 57. Light winds.
.TUESDAY...Mostly sunny. Highs 83 to 88.
.TUESDAY NIGHT AND WEDNESDAY...Mostly clear. Lows 53 to 58. Highs
82 to 87.
.WEDNESDAY NIGHT...Increasing clouds. Lows 52 to 57.
.THURSDAY...Sunny. Highs 82 to 87.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows 49 to
57. Highs 79 to 84.
.SATURDAY...Mostly sunny. Highs 73 to 78.

&&
                  TEMPERATURE
Caldwell        51  82  51  85

$$
=

IDZ014-200400-
Upper Treasure Valley-
230 PM MDT Sat Sep 19 2026

.TONIGHT...Mostly clear. Areas of fog after midnight. Lows 47 to
54. Northwest winds up to 10 mph this evening, becoming light
after midnight.
.SUNDAY...Areas of fog in the morning. Sunny. Highs 77 to 82.
Southeast winds up to 10 mph.
.SUNDAY NIGHT...Mostly clear. Lows 48 to 55. East winds up to
10 mph.
.MONDAY...Areas of fog in the morning. Sunny. Highs 82 to 87.
Southeast winds 10 to 15 mph. Gusts to 25 mph in the afternoon.
.MONDAY NIGHT...Partly cloudy. Lows 51 to 57. North winds up to
10 mph.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs 82 to 87. Lows
52 to 58.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs 83 to 90. Lows
51 to 58.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows 49 to
59. Highs 82 to 87. Breezy.
.SATURDAY...Mostly sunny. Highs 75 to 80.

&&
                  TEMPERATURE
Boise           54  81  55  84
Mountain Home   47  81  49  85

$$
=

IDZ016-200400-
Western Magic Valley-
230 PM MDT Sat Sep 19 2026

.TONIGHT...Mostly clear. Patchy fog. Lows 42 to 47. Light winds
this evening, becoming southeast around 10 mph after midnight.
.SUNDAY...Patchy fog in the morning. Sunny. Highs 72 to 77. East
winds up to 10 mph.
.SUNDAY NIGHT...Mostly clear. Lows 45 to 50. East winds up to
10 mph.
.MONDAY...Sunny. Highs 78 to 83. East winds 10 to 15 mph.
.MONDAY NIGHT...Increasing clouds. Lows 49 to 54. East winds
around 10 mph with gusts to 20 mph.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs 79 to 84. Lows
50 to 55.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs 80 to 87. Lows
51 to 56.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows 49 to
58. Highs 80 to 85. Breezy.
.SATURDAY...Mostly sunny. Highs 74 to 79.

&&
                  TEMPERATURE
Jerome          45  74  48  79
Twin Falls      43  74  46  79

$$
=

IDZ029-200400-
Owyhee Mountains-
230 PM MDT Sat Sep 19 2026

.TONIGHT...Mostly clear. Lows 44 to 54.
.SUNDAY...Sunny. Highs 72 to 79.
.SUNDAY NIGHT...Mostly clear. Lows 47 to 54.
.MONDAY...Sunny. Highs 74 to 81.
.MONDAY NIGHT...Partly cloudy. Lows 49 to 57.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs 76 to 82. Lows
49 to 58.
.WEDNESDAY...Sunny. Highs 76 to 82.
.WEDNESDAY NIGHT...Partly cloudy. Lows 50 to 56.
.THURSDAY AND THURSDAY NIGHT...Mostly clear. Highs 76 to 85. Lows
51 to 57.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Highs 74 to 80. Lows
46 to 53.
.SATURDAY...Mostly sunny. Highs 67 to 74.

$$
=

IDZ015-200400-
Southwest Highlands-
230 PM MDT Sat Sep 19 2026

.TONIGHT...Mostly clear. Lows 40 to 47.
.SUNDAY...Patchy fog in the morning. Sunny. Highs 72 to 77.
.SUNDAY NIGHT...Mostly clear. Lows 45 to 50.
.MONDAY...Sunny. Highs 76 to 82.
.MONDAY NIGHT...Increasing clouds. Lows 49 to 54.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs 76 to 82. Lows
49 to 54.
.WEDNESDAY...Sunny. Highs 79 to 84.
.WEDNESDAY NIGHT...Partly cloudy. Lows 49 to 54.
.THURSDAY...Sunny. Highs 82 to 87.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows 46 to
55. Highs 79 to 84. Breezy.
.SATURDAY...Mostly sunny. Highs 72 to 77.

$$
=

IDZ030-200400-
Southern Twin  Falls County-
230 PM MDT Sat Sep 19 2026

.TONIGHT...Mostly clear. Lows 40 to 45.
.SUNDAY...Sunny. Highs 71 to 76.
.SUNDAY NIGHT...Mostly clear. Lows 44 to 49.
.MONDAY...Sunny. Highs 77 to 82.
.MONDAY NIGHT...Increasing clouds. Lows 49 to 54.
.TUESDAY AND TUESDAY NIGHT...Mostly cloudy. Highs 76 to 81. Lows
50 to 55.
.WEDNESDAY...Sunny. Highs 78 to 83.
.WEDNESDAY NIGHT...Partly cloudy. Lows 51 to 56.
.THURSDAY...Sunny. Highs 81 to 86. Breezy.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows 53 to 58. Highs
79 to 84. Breezy.
.FRIDAY NIGHT...Increasing clouds. Lows 49 to 54.
.SATURDAY...Mostly sunny. Highs 73 to 78.

$$
=

ORZ062-200400-
Baker County-
130 PM PDT Sat Sep 19 2026

.TONIGHT...Mostly clear. Lows 41 to 54. Light winds.
.SUNDAY...Areas of fog in the morning. Sunny. Highs 75 to 82.
Light winds.
.SUNDAY NIGHT...Mostly clear. Lows 42 to 55. Light winds.
.MONDAY...Sunny. Highs 77 to 84. Light winds.
.MONDAY NIGHT...Partly cloudy. Lows 44 to 56. Light winds.
.TUESDAY...Sunny. Highs 77 to 85.
.TUESDAY NIGHT...Partly cloudy. Lows 42 to 55.
.WEDNESDAY...Sunny. Highs 74 to 82.
.WEDNESDAY NIGHT...Partly cloudy. Lows 39 to 52.
.THURSDAY...Sunny. Highs 74 to 82.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows 40 to 53. Highs
70 to 79.
.FRIDAY NIGHT...Mostly cloudy. Lows 36 to 49.
.SATURDAY...Areas of fog in the morning. Mostly sunny. Highs
65 to 74.

&&
                  TEMPERATURE
Baker City      41  79  42  81

$$
=

ORZ061-200400-
Harney County-
130 PM PDT Sat Sep 19 2026

.TONIGHT...Increasing clouds. Lows 39 to 49. Light winds.
.SUNDAY...Sunny. Highs 73 to 80. East winds up to 10 mph.
.SUNDAY NIGHT...Increasing clouds. Lows 40 to 50. East winds up
to 10 mph.
.MONDAY...Mostly sunny. Highs 74 to 81. Northeast winds up to
10 mph.
.MONDAY NIGHT...Partly cloudy. Lows 41 to 52. Light winds.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs 75 to 83. Lows
41 to 52.
.WEDNESDAY...Sunny. Highs 73 to 81.
.WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Partly cloudy. Lows
39 to 51. Highs 74 to 83.
.FRIDAY...Mostly sunny. Highs 70 to 78.
.FRIDAY NIGHT...Increasing clouds. Lows 36 to 47.
.SATURDAY...Mostly sunny. Highs 66 to 72.

&&
                  TEMPERATURE
Burns           39  79  40  81

$$
=

ORZ063-200400-
Malheur County-
230 PM MDT Sat Sep 19 2026 /130 PM PDT Sat Sep 19 2026/

.TONIGHT...Mostly clear. Lows 44 to 54. Northeast winds up to
10 mph this evening, becoming light after midnight.
.SUNDAY...Sunny. Highs 76 to 82. East winds up to 10 mph.
.SUNDAY NIGHT...Mostly clear. Lows 45 to 54. Northeast winds up
to 10 mph.
.MONDAY...Sunny. Highs 78 to 84. Northeast winds up to 10 mph.
.MONDAY NIGHT...Partly cloudy. Lows 47 to 57. North winds up to
10 mph.
.TUESDAY AND TUESDAY NIGHT...Partly cloudy. Highs 80 to 86. Lows
48 to 57.
.WEDNESDAY...Sunny. Highs 79 to 86.
.WEDNESDAY NIGHT...Partly cloudy. Lows 47 to 55.
.THURSDAY...Sunny. Highs 79 to 87.
.THURSDAY NIGHT THROUGH FRIDAY NIGHT...Partly cloudy. Lows 44 to
54. Highs 76 to 83.
.SATURDAY...Mostly sunny. Highs 70 to 76.

$$
=