553
FPUS55 KBOI 230831
ZFPBOI
ZONE FORECASTS FOR SOUTHWEST IDAHO/SOUTHEAST OREGON
NATIONAL WEATHER SERVICE BOISE ID
230 AM MDT WED SEP 23 2026
SPOT TEMPERATURES ARE FOR TODAY, TONIGHT, AND THURSDAY.
IDZ011-231600-
WEST CENTRAL MOUNTAINS-
230 AM MDT WED SEP 23 2026
TODAY
AREAS OF FOG THIS MORNING. SUNNY. HIGHS 65 TO 79.
TONIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
42 TO 53.
THURSDAY
SUNNY. HIGHS 72 TO 84.
THURSDAY NIGHT
INCREASING CLOUDS. LOWS 45 TO 57.
FRIDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. CHANCE OF RAIN 20 PERCENT. HIGHS 62 TO 75. BREEZY.
GUSTS TO 35 MPH IN THE AFTERNOON.
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 34 TO 43.
SATURDAY
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. COOLER
WITH HIGHS 50 TO 62.
SATURDAY NIGHT AND SUNDAY
MOSTLY CLOUDY. LOWS 35 TO 44. HIGHS
54 TO 65.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF RAIN
SHOWERS. AREAS OF FOG AFTER MIDNIGHT. LOWS 35 TO 44.
MONDAY AND MONDAY NIGHT
PARTLY CLOUDY. AREAS OF FOG IN THE
MORNING. AREAS OF FOG AFTER MIDNIGHT. HIGHS 52 TO 64. LOWS 33 TO
43.
TUESDAY
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 54 TO 66.
TEMPERATURE
MCCALL 72 41 79
=
IDZ013-231600-
BOISE MOUNTAINS-
230 AM MDT WED SEP 23 2026
TODAY
AREAS OF FOG THIS MORNING. SUNNY. HIGHS 68 TO 83.
TONIGHT
MOSTLY CLEAR. LOWS 41 TO 56.
THURSDAY
SUNNY. HIGHS 74 TO 89. BREEZY.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 44 TO 59. BREEZY.
FRIDAY
MOSTLY SUNNY. HIGHS 66 TO 81. BREEZY.
FRIDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT. AREAS
OF FOG AFTER MIDNIGHT. CHANCE OF RAIN 20 PERCENT. COLDER WITH
LOWS 32 TO 46.
SATURDAY
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. COOLER
WITH HIGHS 53 TO 67.
SATURDAY NIGHT AND SUNDAY
PARTLY CLOUDY. LOWS 32 TO 47. HIGHS
57 TO 71.
SUNDAY NIGHT
INCREASING CLOUDS. LOWS 31 TO 46.
MONDAY
MOSTLY SUNNY. HIGHS 54 TO 69.
MONDAY NIGHT
MOSTLY CLEAR. LOWS 29 TO 44.
TUESDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 56 TO 71.
TEMPERATURE
IDAHO CITY 82 44 89
=
IDZ028-231600-
CAMAS PRAIRIE-
230 AM MDT WED SEP 23 2026
TODAY
AREAS OF FOG THIS MORNING. SUNNY. HIGHS 73 TO 78. EAST
WINDS UP TO 10 MPH.
TONIGHT
MOSTLY CLEAR. LOWS 42 TO 47. EAST WINDS 10 TO 15 MPH.
THURSDAY
SUNNY. HIGHS 78 TO 83. BREEZY. EAST WINDS 10 TO
20 MPH WITH GUSTS TO 30 MPH.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 46 TO 51. BREEZY. EAST WINDS
10 TO 20 MPH WITH GUSTS TO 30 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS 76 TO 81. BREEZY. NORTHEAST WINDS
10 TO 15 MPH IN THE MORNING, SHIFTING TO SOUTHWEST 10 TO 20 MPH
WITH GUSTS TO 40 MPH IN THE AFTERNOON.
FRIDAY NIGHT THROUGH MONDAY
PARTLY CLOUDY. COOLER. LOWS 34 TO
41. HIGHS 61 TO 70. BREEZY.
MONDAY NIGHT
MOSTLY CLEAR. PATCHY FOG AFTER MIDNIGHT. LOWS
30 TO 35.
TUESDAY
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 62 TO 67.
TEMPERATURE
FAIRFIELD 77 42 81
=
IDZ033-231600-
UPPER WEISER RIVER-
230 AM MDT WED SEP 23 2026
TODAY
SUNNY. HIGHS 77 TO 82. LIGHT WINDS.
TONIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
51 TO 57. NORTHEAST WINDS UP TO 10 MPH.
THURSDAY
SUNNY. HIGHS 83 TO 88. LIGHT WINDS IN THE MORNING,
BECOMING SOUTHWEST 10 TO 15 MPH IN THE AFTERNOON.
THURSDAY NIGHT
INCREASING CLOUDS. LOWS 55 TO 61. SOUTHEAST
WINDS UP TO 10 MPH.
FRIDAY
PARTLY SUNNY. HIGHS 74 TO 80. BREEZY. SOUTH WINDS UP TO
10 MPH WITH GUSTS TO 20 MPH IN THE MORNING, INCREASING TO
SOUTHWEST 15 TO 20 MPH WITH GUSTS TO 30 MPH IN THE AFTERNOON.
FRIDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN MOSTLY CLEAR AFTER MIDNIGHT. CHANCE
OF RAIN 20 PERCENT. COOLER WITH LOWS 42 TO 47.
SATURDAY
MOSTLY SUNNY. COOLER WITH HIGHS 61 TO 68.
SATURDAY NIGHT THROUGH SUNDAY NIGHT
MOSTLY CLOUDY. LOWS 43 TO
48. HIGHS 64 TO 71.
MONDAY
MOSTLY SUNNY. HIGHS 64 TO 71.
MONDAY NIGHT AND TUESDAY
MOSTLY CLEAR. LOWS 42 TO 47. HIGHS
65 TO 72.
TEMPERATURE
COUNCIL 81 53 87
CAMBRIDGE 82 52 87
=
ORZ064-231600-
OREGON LOWER TREASURE VALLEY-
230 AM MDT WED SEP 23 2026 /130 AM PDT WED SEP 23 2026/
TODAY
SUNNY. HIGHS 80 TO 85. LIGHT WINDS.
TONIGHT
DECREASING CLOUDS. LOWS 50 TO 55. NORTH WINDS UP TO
10 MPH.
THURSDAY
SUNNY. HIGHS 87 TO 92. SOUTHEAST WINDS 10 TO 15 MPH
WITH GUSTS TO 25 MPH.
THURSDAY NIGHT
INCREASING CLOUDS. LOWS 55 TO 60. SOUTH WINDS
10 TO 15 MPH. GUSTS TO 25 MPH IN THE EVENING.
FRIDAY
PARTLY SUNNY. NOT AS WARM WITH HIGHS 77 TO 82. WINDY.
LIGHT WINDS IN THE MORNING, BECOMING WEST 15 TO 25 MPH WITH GUSTS
TO 35 MPH IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLEAR. COOLER WITH LOWS 44 TO 49. BREEZY.
SATURDAY
MOSTLY SUNNY. COOLER WITH HIGHS 65 TO 70.
SATURDAY NIGHT
INCREASING CLOUDS. LOWS 42 TO 49.
SUNDAY AND SUNDAY NIGHT
PARTLY CLOUDY. HIGHS 68 TO 73. LOWS
43 TO 49.
MONDAY THROUGH TUESDAY
MOSTLY CLEAR. HIGHS 69 TO 75. LOWS
41 TO 47.
TEMPERATURE
ONTARIO 84 50 90
=
IDZ012-231600-
LOWER TREASURE VALLEY-
230 AM MDT WED SEP 23 2026
TODAY
PATCHY FOG THIS MORNING. SUNNY. HIGHS 81 TO 86.
SOUTHEAST WINDS UP TO 10 MPH.
TONIGHT
DECREASING CLOUDS. LOWS 51 TO 57. EAST WINDS 10 TO
15 MPH. GUSTS TO 25 MPH AFTER MIDNIGHT.
THURSDAY
SUNNY. HIGHS 87 TO 92. BREEZY. SOUTHEAST WINDS 10 TO
20 MPH WITH GUSTS TO 35 MPH.
THURSDAY NIGHT
INCREASING CLOUDS. LOWS 57 TO 62. SOUTHEAST
WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
FRIDAY
PARTLY SUNNY. HIGHS 78 TO 83. WINDY. SOUTH WINDS 10 TO
15 MPH IN THE MORNING, BECOMING SOUTHWEST 15 TO 25 MPH IN THE
AFTERNOON.
FRIDAY NIGHT AND SATURDAY
PARTLY CLOUDY. COOLER. LOWS 44 TO
49. HIGHS 64 TO 69. BREEZY.
SATURDAY NIGHT
INCREASING CLOUDS. LOWS 43 TO 48.
SUNDAY AND SUNDAY NIGHT
PARTLY CLOUDY. HIGHS 68 TO 73. LOWS
44 TO 49.
MONDAY THROUGH TUESDAY
MOSTLY CLEAR. HIGHS 68 TO 75. LOWS
42 TO 47.
TEMPERATURE
CALDWELL 84 53 90
=
IDZ014-231600-
UPPER TREASURE VALLEY-
230 AM MDT WED SEP 23 2026
TODAY
AREAS OF FOG THIS MORNING. SUNNY. HIGHS 82 TO 87.
SOUTHEAST WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
TONIGHT
MOSTLY CLEAR. LOWS 50 TO 59. EAST WINDS 10 TO 15 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
INCREASING CLOUDS. LOWS 55 TO 63. WINDY.
SOUTHEAST WINDS 15 TO 25 MPH WITH GUSTS TO 40 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS 81 TO 87. WINDY. SOUTHEAST WINDS
10 TO 15 MPH WITH GUSTS TO 25 MPH IN THE MORNING, SHIFTING TO
SOUTHWEST 15 TO 25 MPH WITH GUSTS TO 40 MPH IN THE AFTERNOON.
FRIDAY NIGHT THROUGH MONDAY
PARTLY CLOUDY. NOT AS WARM. LOWS
42 TO 49. HIGHS 65 TO 74. WINDY.
MONDAY NIGHT AND TUESDAY
MOSTLY CLEAR. LOWS 40 TO 46. HIGHS
69 TO 74.
TEMPERATURE
BOISE 84 59 91
MOUNTAIN HOME 86 56 92
=
IDZ016-231600-
WESTERN MAGIC VALLEY-
230 AM MDT WED SEP 23 2026
TODAY
PATCHY FOG THIS MORNING. SUNNY. HIGHS 78 TO 83. EAST
WINDS UP TO 10 MPH.
TONIGHT
MOSTLY CLEAR. LOWS 49 TO 56. EAST WINDS 10 TO 15 MPH
WITH GUSTS TO 30 MPH.
THURSDAY
SUNNY. HIGHS 84 TO 89. BREEZY. EAST WINDS 10 TO
20 MPH WITH GUSTS TO 30 MPH.
THURSDAY NIGHT
MOSTLY CLEAR. LOWS 53 TO 59. BREEZY. EAST WINDS
10 TO 20 MPH WITH GUSTS TO 35 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS 82 TO 87. EAST WINDS 10 TO 15 MPH
IN THE MORNING, SHIFTING TO WEST IN THE AFTERNOON. GUSTS TO
30 MPH.
FRIDAY NIGHT THROUGH SUNDAY
PARTLY CLOUDY. NOT AS WARM. LOWS
41 TO 49. HIGHS 64 TO 74. WINDY.
SUNDAY NIGHT
DECREASING CLOUDS. LOWS 43 TO 48.
MONDAY
MOSTLY SUNNY. HIGHS 64 TO 69.
MONDAY NIGHT AND TUESDAY
MOSTLY CLEAR. LOWS 39 TO 44. HIGHS
66 TO 71.
TEMPERATURE
JEROME 79 52 84
TWIN FALLS 79 50 85
=
IDZ029-231600-
OWYHEE MOUNTAINS-
230 AM MDT WED SEP 23 2026
TODAY
SUNNY. HIGHS 74 TO 83.
TONIGHT
DECREASING CLOUDS. LOWS 52 TO 59. BREEZY.
THURSDAY
SUNNY. HIGHS 82 TO 88.
THURSDAY NIGHT
INCREASING CLOUDS. LOWS 55 TO 64. BREEZY.
FRIDAY
MOSTLY SUNNY. NOT AS WARM WITH HIGHS 71 TO 76. WINDY.
SOUTHWEST WINDS AROUND 25 MPH WITH GUSTS TO 45 MPH IN THE
AFTERNOON.
FRIDAY NIGHT THROUGH SUNDAY
PARTLY CLOUDY. LOWS 38 TO 46.
HIGHS 58 TO 68. BREEZY.
SUNDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS IN
THE EVENING. CHANCE OF RAIN 20 PERCENT. LOWS 40 TO 47.
MONDAY
MOSTLY SUNNY. HIGHS 61 TO 66.
MONDAY NIGHT AND TUESDAY
MOSTLY CLEAR. LOWS 38 TO 46. HIGHS
64 TO 70.
=
IDZ015-231600-
SOUTHWEST HIGHLANDS-
230 AM MDT WED SEP 23 2026
TODAY
SUNNY. HIGHS 77 TO 83.
TONIGHT
DECREASING CLOUDS. LOWS 47 TO 54.
THURSDAY
SUNNY. HIGHS 82 TO 88. BREEZY.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS 51 TO 58. BREEZY.
FRIDAY
MOSTLY SUNNY. HIGHS 76 TO 83. WINDY. SOUTHWEST WINDS
25 TO 30 MPH WITH GUSTS TO 45 MPH IN THE AFTERNOON.
FRIDAY NIGHT THROUGH SUNDAY
PARTLY CLOUDY. NOT AS WARM. LOWS
39 TO 44. HIGHS 62 TO 72. WINDY.
SUNDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS IN
THE EVENING. CHANCE OF RAIN 20 PERCENT. LOWS 39 TO 44.
MONDAY
MOSTLY SUNNY. HIGHS 62 TO 67.
MONDAY NIGHT AND TUESDAY
MOSTLY CLEAR. LOWS 36 TO 41. HIGHS
66 TO 71.
=
IDZ030-231600-
SOUTHERN TWIN FALLS COUNTY-
230 AM MDT WED SEP 23 2026
TODAY
SUNNY. HIGHS 77 TO 82.
TONIGHT
MOSTLY CLEAR. LOWS 50 TO 55. BREEZY.
THURSDAY
SUNNY. HIGHS 82 TO 87. BREEZY.
THURSDAY NIGHT
DECREASING CLOUDS. LOWS 54 TO 59. WINDY. SOUTH
WINDS AROUND 25 MPH AFTER MIDNIGHT. GUSTS TO 35 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS 80 TO 85. WINDY. SOUTH WINDS AROUND
25 MPH IN THE MORNING. GUSTS TO 35 MPH.
FRIDAY NIGHT THROUGH SUNDAY
PARTLY CLOUDY. NOT AS WARM. LOWS
40 TO 46. HIGHS 63 TO 73. WINDY.
SUNDAY NIGHT
DECREASING CLOUDS. A 20 PERCENT CHANCE OF RAIN
SHOWERS. LOWS 41 TO 46.
MONDAY
MOSTLY SUNNY. HIGHS 62 TO 67.
MONDAY NIGHT AND TUESDAY
MOSTLY CLEAR. LOWS 36 TO 42. HIGHS
66 TO 71.
=
ORZ062-231600-
BAKER COUNTY-
130 AM PDT WED SEP 23 2026
TODAY
PATCHY FOG THIS MORNING. SUNNY. HIGHS 74 TO 82. LIGHT
WINDS THIS MORNING, BECOMING SOUTHEAST UP TO 10 MPH WITH GUSTS TO
20 MPH THIS AFTERNOON.
TONIGHT
DECREASING CLOUDS. LOWS 40 TO 53. NORTHWEST WINDS UP
TO 10 MPH.
THURSDAY
SUNNY. HIGHS 79 TO 86. BREEZY. SOUTHEAST WINDS 10 TO
20 MPH WITH GUSTS TO 30 MPH.
THURSDAY NIGHT
INCREASING CLOUDS. LOWS 45 TO 58. SOUTH WINDS
10 TO 15 MPH. GUSTS TO 30 MPH IN THE EVENING.
FRIDAY
MOSTLY CLOUDY IN THE MORNING, THEN BECOMING PARTLY
SUNNY. A 30 PERCENT CHANCE OF RAIN SHOWERS. COOLER WITH HIGHS
66 TO 76. BREEZY. SOUTHWEST WINDS UP TO 10 MPH IN THE MORNING,
INCREASING TO WEST 10 TO 20 MPH WITH GUSTS TO 35 MPH IN THE
AFTERNOON.
FRIDAY NIGHT
MOSTLY CLEAR. AREAS OF FOG AFTER MIDNIGHT. COLDER
WITH LOWS 31 TO 43.
SATURDAY
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. COOLER
WITH HIGHS 58 TO 66.
SATURDAY NIGHT AND SUNDAY
MOSTLY CLOUDY. LOWS 32 TO 45. HIGHS
61 TO 69.
SUNDAY NIGHT
DECREASING CLOUDS. PATCHY FOG AFTER MIDNIGHT.
LOWS 31 TO 44.
MONDAY THROUGH TUESDAY
AREAS OF FOG IN THE MORNING. AREAS OF
FOG THROUGH THE DAY. MOSTLY CLEAR. HIGHS 61 TO 71. LOWS 32 TO 45.
TEMPERATURE
BAKER CITY 78 40 83
=
ORZ061-231600-
HARNEY COUNTY-
130 AM PDT WED SEP 23 2026
TODAY
SUNNY. HIGHS 72 TO 81. LIGHT WINDS THIS MORNING,
BECOMING SOUTH UP TO 10 MPH THIS AFTERNOON.
TONIGHT
PARTLY CLOUDY. LOWS 39 TO 52. NORTH WINDS UP TO
10 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS 77 TO 85. BREEZY. SOUTH WINDS UP
TO 10 MPH IN THE MORNING, INCREASING TO 10 TO 20 MPH WITH GUSTS
TO 30 MPH IN THE AFTERNOON.
THURSDAY NIGHT
INCREASING CLOUDS. LOWS 43 TO 54. SOUTHWEST
WINDS 10 TO 15 MPH. GUSTS TO 30 MPH IN THE EVENING.
FRIDAY
MOSTLY SUNNY. MUCH COOLER WITH HIGHS 62 TO 69. WINDY.
SOUTHWEST WINDS 10 TO 20 MPH IN THE MORNING, INCREASING TO WEST
20 TO 30 MPH WITH GUSTS TO 40 MPH IN THE AFTERNOON.
FRIDAY NIGHT
INCREASING CLOUDS. PATCHY FOG AFTER MIDNIGHT.
COLDER WITH LOWS 29 TO 39. BREEZY.
SATURDAY
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. HIGHS
58 TO 64.
SATURDAY NIGHT AND SUNDAY
MOSTLY CLOUDY. LOWS 33 TO 42. HIGHS
62 TO 67.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. CHANCE
OF RAIN 20 PERCENT. LOWS 30 TO 41.
MONDAY AND MONDAY NIGHT
MOSTLY CLEAR. HIGHS 61 TO 66. LOWS
31 TO 41.
TUESDAY
SUNNY. HIGHS 65 TO 71.
TEMPERATURE
BURNS 78 39 84
=
ORZ063-231600-
MALHEUR COUNTY-
230 AM MDT WED SEP 23 2026 /130 AM PDT WED SEP 23 2026/
TODAY
SUNNY. HIGHS 77 TO 85. NORTHEAST WINDS UP TO 10 MPH.
GUSTS TO 20 MPH THIS AFTERNOON.
TONIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
48 TO 55. NORTHEAST WINDS 10 TO 15 MPH IN THE EVENING, SHIFTING
TO SOUTH AFTER MIDNIGHT. GUSTS TO 25 MPH.
THURSDAY
SUNNY. HIGHS 83 TO 90. BREEZY. SOUTH WINDS 10 TO
20 MPH. GUSTS TO 30 MPH IN THE AFTERNOON.
THURSDAY NIGHT
INCREASING CLOUDS. LOWS 52 TO 60. BREEZY. SOUTH
WINDS 10 TO 20 MPH. GUSTS TO 30 MPH IN THE EVENING.
FRIDAY
MOSTLY SUNNY. NOT AS WARM WITH HIGHS 70 TO 79. WINDY.
SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH IN THE MORNING,
INCREASING TO WEST 20 TO 30 MPH WITH GUSTS TO 45 MPH IN THE
AFTERNOON.
FRIDAY NIGHT
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. MUCH
COLDER WITH LOWS 35 TO 45. BREEZY.
SATURDAY
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. COOLER
WITH HIGHS 60 TO 67.
SATURDAY NIGHT AND SUNDAY
PARTLY CLOUDY. LOWS 36 TO 46. HIGHS
65 TO 71.
SUNDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS IN
THE EVENING. CHANCE OF RAIN 20 PERCENT. LOWS 36 TO 46.
MONDAY
MOSTLY SUNNY. HIGHS 64 TO 71.
MONDAY NIGHT AND TUESDAY
MOSTLY CLEAR. LOWS 35 TO 45. HIGHS
67 TO 73.
=
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