186
FPUS55 KBOI 220831
ZFPBOI
ZONE FORECASTS FOR SOUTHWEST IDAHO/SOUTHEAST OREGON
NATIONAL WEATHER SERVICE BOISE ID
230 AM MDT TUE SEP 22 2026
SPOT TEMPERATURES ARE FOR TODAY, TONIGHT, AND WEDNESDAY.
IDZ011-221600-
WEST CENTRAL MOUNTAINS-
230 AM MDT TUE SEP 22 2026
TODAY
PATCHY FOG THIS MORNING. MOSTLY SUNNY. HIGHS 67 TO 80.
TONIGHT
PARTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR
AFTER MIDNIGHT. CHANCE OF RAIN 40 PERCENT. LOWS 41 TO 52.
WEDNESDAY
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 65 TO 79.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 43 TO 53.
THURSDAY
SUNNY. HIGHS 71 TO 84.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS 47 TO 57.
FRIDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. CHANCE OF RAIN 20 PERCENT. HIGHS 62 TO 75.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS IN
THE EVENING, THEN PARTLY CLOUDY WITH A SLIGHT CHANCE OF RAIN
SHOWERS AFTER MIDNIGHT. AREAS OF FOG AFTER MIDNIGHT. CHANCE OF
RAIN 30 PERCENT. COLDER WITH LOWS 36 TO 45.
SATURDAY
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. COOLER
WITH HIGHS 52 TO 64.
SATURDAY NIGHT AND SUNDAY
MOSTLY CLOUDY. LOWS 35 TO 45. HIGHS
54 TO 66.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN PARTLY CLOUDY
WITH A SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. AREAS OF FOG
AFTER MIDNIGHT. CHANCE OF RAIN 20 PERCENT. LOWS 35 TO 44.
MONDAY
AREAS OF FOG IN THE MORNING. PARTLY CLOUDY WITH A
20 PERCENT CHANCE OF RAIN SHOWERS. HIGHS 50 TO 63.
TEMPERATURE
MCCALL 74 41 72
=
IDZ013-221600-
BOISE MOUNTAINS-
230 AM MDT TUE SEP 22 2026
TODAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS WITH A SLIGHT
CHANCE OF THUNDERSTORMS THIS AFTERNOON. CHANCE OF RAIN
30 PERCENT. HIGHS 67 TO 82.
TONIGHT
RAIN SHOWERS LIKELY WITH A SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT.
CHANCE OF RAIN 60 PERCENT. LOWS 38 TO 53.
WEDNESDAY
SUNNY. HIGHS 69 TO 83.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 40 TO 55.
THURSDAY
SUNNY. HIGHS 74 TO 89. BREEZY.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 43 TO 58. HIGHS
65 TO 80. BREEZY.
FRIDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS IN
THE EVENING. AREAS OF FOG AFTER MIDNIGHT. CHANCE OF RAIN
20 PERCENT. LOWS 34 TO 48.
SATURDAY
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. COOLER
WITH HIGHS 54 TO 69.
SATURDAY NIGHT AND SUNDAY
PARTLY CLOUDY. LOWS 32 TO 47. HIGHS
56 TO 71.
SUNDAY NIGHT
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS
31 TO 46.
MONDAY
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 52 TO
67.
TEMPERATURE
IDAHO CITY 81 43 83
=
IDZ028-221600-
CAMAS PRAIRIE-
230 AM MDT TUE SEP 22 2026
TODAY
DECREASING CLOUDS. HIGHS 70 TO 75. EAST WINDS UP TO
10 MPH WITH GUSTS TO 20 MPH.
TONIGHT
PARTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR
AFTER MIDNIGHT. AREAS OF FOG AFTER MIDNIGHT. CHANCE OF RAIN
30 PERCENT. LOWS 40 TO 45. NORTHEAST WINDS UP TO 10 MPH.
WEDNESDAY
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 74 TO 79.
LIGHT WINDS.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 43 TO 48. EAST WINDS 10 TO
15 MPH.
THURSDAY
SUNNY. HIGHS 76 TO 81. BREEZY. EAST WINDS 10 TO
20 MPH. GUSTS TO 30 MPH IN THE AFTERNOON.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 48 TO 53. HIGHS
73 TO 78. BREEZY.
FRIDAY NIGHT THROUGH SUNDAY
PARTLY CLOUDY. LOWS 36 TO 43.
HIGHS 63 TO 70. BREEZY.
SUNDAY NIGHT
INCREASING CLOUDS. LOWS 34 TO 40.
MONDAY
SUNNY. HIGHS 60 TO 65.
TEMPERATURE
FAIRFIELD 73 40 77
=
IDZ033-221600-
UPPER WEISER RIVER-
230 AM MDT TUE SEP 22 2026
TODAY
MOSTLY SUNNY. HIGHS 77 TO 83. LIGHT WINDS.
TONIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
51 TO 56. LIGHT WINDS.
WEDNESDAY
SUNNY. HIGHS 76 TO 82. LIGHT WINDS.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 52 TO 58. LIGHT WINDS.
THURSDAY
SUNNY. HIGHS 83 TO 88. LIGHT WINDS IN THE MORNING,
BECOMING SOUTHWEST 10 TO 15 MPH IN THE AFTERNOON.
THURSDAY NIGHT AND FRIDAY
INCREASING CLOUDS. LOWS 57 TO 62.
HIGHS 75 TO 81.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS IN
THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. CHANCE OF RAIN
30 PERCENT. COOLER WITH LOWS 44 TO 49.
SATURDAY
MOSTLY SUNNY. COOLER WITH HIGHS 62 TO 69.
SATURDAY NIGHT AND SUNDAY
MOSTLY CLOUDY. LOWS 43 TO 48. HIGHS
65 TO 71.
SUNDAY NIGHT AND MONDAY
PARTLY CLOUDY. LOWS 42 TO 47. HIGHS
62 TO 69.
TEMPERATURE
COUNCIL 82 52 81
CAMBRIDGE 83 51 81
=
ORZ064-221600-
OREGON LOWER TREASURE VALLEY-
230 AM MDT TUE SEP 22 2026 /130 AM PDT TUE SEP 22 2026/
TODAY
SUNNY. HIGHS 82 TO 87. LIGHT WINDS.
TONIGHT
DECREASING CLOUDS. LOWS 51 TO 56. NORTHWEST WINDS UP
TO 10 MPH WITH GUSTS TO 20 MPH.
WEDNESDAY
SUNNY. HIGHS 80 TO 85. LIGHT WINDS.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 51 TO 57. LIGHT WINDS.
THURSDAY
SUNNY. HIGHS 87 TO 92. EAST WINDS 10 TO 15 MPH WITH
GUSTS TO 25 MPH.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 58 TO 63. HIGHS
79 TO 84.
FRIDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS IN THE
EVENING. CHANCE OF RAIN 20 PERCENT. COOLER WITH LOWS 45 TO 50.
BREEZY.
SATURDAY
MOSTLY SUNNY. COOLER WITH HIGHS 66 TO 71.
SATURDAY NIGHT AND SUNDAY
MOSTLY CLOUDY. LOWS 43 TO 48. HIGHS
69 TO 74.
SUNDAY NIGHT AND MONDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS
68 TO 73.
TEMPERATURE
ONTARIO 85 51 83
=
IDZ012-221600-
LOWER TREASURE VALLEY-
230 AM MDT TUE SEP 22 2026
TODAY
MOSTLY SUNNY. HIGHS 81 TO 86. LIGHT WINDS.
TONIGHT
MOSTLY CLEAR. LOWS 50 TO 55. LIGHT WINDS.
WEDNESDAY
SUNNY. HIGHS 81 TO 86. SOUTHEAST WINDS UP TO 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 52 TO 57. EAST WINDS UP TO
10 MPH.
THURSDAY
SUNNY. HIGHS 88 TO 93. BREEZY. SOUTHEAST WINDS 10 TO
20 MPH WITH GUSTS TO 35 MPH.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 58 TO 63. HIGHS
79 TO 84.
FRIDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS IN THE
EVENING. CHANCE OF RAIN 20 PERCENT. COOLER WITH LOWS 45 TO 50.
BREEZY.
SATURDAY THROUGH MONDAY
PARTLY CLOUDY. NOT AS WARM. HIGHS
66 TO 74. LOWS 43 TO 48.
TEMPERATURE
CALDWELL 84 52 84
=
IDZ014-221600-
UPPER TREASURE VALLEY-
230 AM MDT TUE SEP 22 2026
TODAY
MOSTLY SUNNY. HIGHS 79 TO 84. SOUTHEAST WINDS UP TO
10 MPH.
TONIGHT
MOSTLY CLEAR. LOWS 49 TO 56. EAST WINDS UP TO 10 MPH
WITH GUSTS TO 20 MPH.
WEDNESDAY
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 83 TO 88.
SOUTHEAST WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 51 TO 60. BREEZY. EAST
WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH.
THURSDAY
SUNNY. HIGHS 88 TO 93. WINDY. SOUTHEAST WINDS 15 TO
25 MPH WITH GUSTS TO 35 MPH.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 57 TO 64. HIGHS
82 TO 87. BREEZY.
FRIDAY NIGHT THROUGH SUNDAY NIGHT
PARTLY CLOUDY. NOT AS WARM.
LOWS 42 TO 50. HIGHS 67 TO 75. WINDY.
MONDAY
SUNNY. HIGHS 66 TO 71.
TEMPERATURE
BOISE 83 56 85
MOUNTAIN HOME 82 52 86
=
IDZ016-221600-
WESTERN MAGIC VALLEY-
230 AM MDT TUE SEP 22 2026
TODAY
MOSTLY CLOUDY THIS MORNING, THEN PARTLY CLOUDY WITH A
CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS THIS
AFTERNOON. CHANCE OF RAIN 30 PERCENT. HIGHS 73 TO 78. SOUTHEAST
WINDS AROUND 10 MPH WITH GUSTS TO 20 MPH.
TONIGHT
DECREASING CLOUDS. LOWS 46 TO 51. EAST WINDS AROUND
10 MPH.
WEDNESDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 79 TO 84.
EAST WINDS UP TO 10 MPH WITH GUSTS TO 20 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 51 TO 56. BREEZY. EAST
WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH.
THURSDAY
SUNNY. HIGHS 82 TO 87. BREEZY. EAST WINDS 10 TO
20 MPH WITH GUSTS TO 30 MPH.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 55 TO 60. HIGHS
79 TO 84. BREEZY.
FRIDAY NIGHT THROUGH SUNDAY NIGHT
PARTLY CLOUDY. NOT AS WARM.
LOWS 42 TO 51. HIGHS 67 TO 75. WINDY.
MONDAY
SUNNY. HIGHS 64 TO 69.
TEMPERATURE
JEROME 74 49 79
TWIN FALLS 74 48 80
=
IDZ029-221600-
OWYHEE MOUNTAINS-
230 AM MDT TUE SEP 22 2026
TODAY
MOSTLY SUNNY. HIGHS 75 TO 80.
TONIGHT
MOSTLY CLEAR. LOWS 48 TO 56.
WEDNESDAY
SUNNY. HIGHS 75 TO 83.
WEDNESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 53 TO 60.
THURSDAY
SUNNY. HIGHS 82 TO 88.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. NOT AS WARM. LOWS
55 TO 62. HIGHS 73 TO 78. BREEZY.
FRIDAY NIGHT THROUGH SUNDAY NIGHT
PARTLY CLOUDY. LOWS 40 TO
48. HIGHS 60 TO 69. BREEZY.
MONDAY
SUNNY. HIGHS 61 TO 66.
=
IDZ015-221600-
SOUTHWEST HIGHLANDS-
230 AM MDT TUE SEP 22 2026
TODAY
PARTLY CLOUDY. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE
OF THUNDERSTORMS THIS AFTERNOON. CHANCE OF RAIN 30 PERCENT. HIGHS
72 TO 78.
TONIGHT
PARTLY CLOUDY WITH A CHANCE OF SHOWERS WITH A SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR AFTER
MIDNIGHT. CHANCE OF RAIN 40 PERCENT. LOWS 45 TO 51.
WEDNESDAY
SUNNY. HIGHS 78 TO 83.
WEDNESDAY NIGHT
DECREASING CLOUDS. LOWS 49 TO 55. BREEZY.
THURSDAY
SUNNY. HIGHS 81 TO 88.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 53 TO 59. HIGHS
76 TO 83. WINDY.
FRIDAY NIGHT THROUGH SUNDAY NIGHT
PARTLY CLOUDY. NOT AS WARM.
LOWS 40 TO 47. HIGHS 66 TO 73. WINDY.
MONDAY
SUNNY. HIGHS 63 TO 68.
=
IDZ030-221600-
SOUTHERN TWIN FALLS COUNTY-
230 AM MDT TUE SEP 22 2026
TODAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS WITH A SLIGHT
CHANCE OF THUNDERSTORMS THIS AFTERNOON. CHANCE OF RAIN
30 PERCENT. HIGHS 69 TO 76.
TONIGHT
DECREASING CLOUDS. LOWS 45 TO 50.
WEDNESDAY
SUNNY. HIGHS 77 TO 82.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 50 TO 55. BREEZY.
THURSDAY
SUNNY. HIGHS 81 TO 86.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 54 TO 59. HIGHS
78 TO 83. WINDY.
FRIDAY NIGHT THROUGH SUNDAY
PARTLY CLOUDY. NOT AS WARM. LOWS
42 TO 49. HIGHS 67 TO 75. BREEZY.
SUNDAY NIGHT
INCREASING CLOUDS. LOWS 41 TO 46.
MONDAY
SUNNY. HIGHS 63 TO 68.
=
ORZ062-221600-
BAKER COUNTY-
130 AM PDT TUE SEP 22 2026
TODAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS WITH A SLIGHT
CHANCE OF THUNDERSTORMS THIS AFTERNOON. CHANCE OF RAIN
30 PERCENT. HIGHS 75 TO 83. NORTHWEST WINDS UP TO 10 MPH. GUSTS
TO 20 MPH THIS AFTERNOON.
TONIGHT
DECREASING CLOUDS. LOWS 38 TO 50. NORTHWEST WINDS
10 TO 15 MPH.
WEDNESDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 73 TO 81.
LIGHT WINDS.
WEDNESDAY NIGHT
DECREASING CLOUDS. LOWS 41 TO 54. LIGHT WINDS.
THURSDAY
SUNNY. HIGHS 79 TO 88. BREEZY. SOUTHEAST WINDS 10 TO
20 MPH WITH GUSTS TO 35 MPH.
THURSDAY NIGHT
INCREASING CLOUDS. LOWS 48 TO 59.
FRIDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS, MAINLY IN THE
AFTERNOON. CHANCE OF RAIN 30 PERCENT. NOT AS WARM WITH HIGHS
67 TO 77.
FRIDAY NIGHT
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN THE
EVENING. AREAS OF FOG AFTER MIDNIGHT. CHANCE OF RAIN 30 PERCENT.
COLDER WITH LOWS 33 TO 44.
SATURDAY
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. COOLER
WITH HIGHS 59 TO 67.
SATURDAY NIGHT AND SUNDAY
MOSTLY CLOUDY. LOWS 33 TO 45. HIGHS
61 TO 70.
SUNDAY NIGHT AND MONDAY
PARTLY CLOUDY. AREAS OF FOG THROUGH
THE DAY. LOWS 32 TO 44. HIGHS 60 TO 68.
TEMPERATURE
BAKER CITY 78 38 76
=
ORZ061-221600-
HARNEY COUNTY-
130 AM PDT TUE SEP 22 2026
TODAY
MOSTLY SUNNY. HIGHS 72 TO 80. LIGHT WINDS THIS MORNING,
BECOMING WEST 10 TO 15 MPH THIS AFTERNOON.
TONIGHT
MOSTLY CLEAR. LOWS 38 TO 49. NORTHWEST WINDS 10 TO
15 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS 72 TO 81. LIGHT WINDS IN THE
MORNING, BECOMING SOUTH UP TO 10 MPH WITH GUSTS TO 20 MPH IN THE
AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 40 TO 52. NORTH WINDS UP TO 10 MPH. GUSTS TO 20 MPH IN THE
EVENING.
THURSDAY
SUNNY. HIGHS 79 TO 87. BREEZY. SOUTH WINDS UP TO
10 MPH IN THE MORNING, INCREASING TO SOUTHWEST 10 TO 20 MPH WITH
GUSTS TO 30 MPH IN THE AFTERNOON.
THURSDAY NIGHT
INCREASING CLOUDS. LOWS 45 TO 54. BREEZY.
FRIDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. CHANCE OF RAIN 30 PERCENT. COOLER WITH HIGHS 65 TO 72.
BREEZY.
FRIDAY NIGHT AND SATURDAY
PARTLY CLOUDY. AREAS OF FOG THROUGH
THE DAY. LOWS 30 TO 41. HIGHS 60 TO 66. BREEZY.
SATURDAY NIGHT AND SUNDAY
PARTLY CLOUDY. LOWS 32 TO 43. HIGHS
62 TO 67.
SUNDAY NIGHT
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS
30 TO 41.
MONDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 60 TO 66.
TEMPERATURE
BURNS 80 38 78
=
ORZ063-221600-
MALHEUR COUNTY-
230 AM MDT TUE SEP 22 2026 /130 AM PDT TUE SEP 22 2026/
TODAY
SUNNY. HIGHS 78 TO 84. NORTHWEST WINDS UP TO 10 MPH.
GUSTS TO 20 MPH THIS AFTERNOON.
TONIGHT
DECREASING CLOUDS. LOWS 45 TO 54. NORTH WINDS UP TO
10 MPH WITH GUSTS TO 20 MPH.
WEDNESDAY
SUNNY. HIGHS 77 TO 85. NORTHEAST WINDS UP TO 10 MPH.
GUSTS TO 20 MPH IN THE AFTERNOON.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 49 TO 56. NORTHEAST WINDS
10 TO 15 MPH.
THURSDAY
SUNNY. HIGHS 84 TO 91. SOUTH WINDS 10 TO 15 MPH WITH
GUSTS TO 25 MPH.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. NOT AS WARM. LOWS
53 TO 61. HIGHS 73 TO 80. BREEZY.
FRIDAY NIGHT
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. MUCH
COLDER WITH LOWS 37 TO 47. BREEZY.
SATURDAY
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. COOLER
WITH HIGHS 62 TO 69.
SATURDAY NIGHT AND SUNDAY
PARTLY CLOUDY. LOWS 37 TO 47. HIGHS
66 TO 72.
SUNDAY NIGHT
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS
36 TO 46.
MONDAY
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 64 TO 70.
=
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