319
FPUS55 KBOI 120831
ZFPBOI
ZONE FORECASTS FOR SOUTHWEST IDAHO/SOUTHEAST OREGON
NATIONAL WEATHER SERVICE BOISE ID
230 AM MDT SAT SEP 12 2026
SPOT TEMPERATURES ARE FOR TODAY, TONIGHT, AND SUNDAY.
IDZ011-121600-
WEST CENTRAL MOUNTAINS-
230 AM MDT SAT SEP 12 2026
TODAY
INCREASING CLOUDS. HIGHS 65 TO 78.
TONIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY WITH
A CHANCE OF RAIN SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS
AFTER MIDNIGHT. CHANCE OF RAIN 30 PERCENT. LOWS 39 TO 48.
SUNDAY
RAIN SHOWERS LIKELY IN THE MORNING, THEN A CHANCE OF
RAIN SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. CHANCE OF RAIN 60 PERCENT. MUCH COOLER WITH HIGHS
47 TO 60.
SUNDAY NIGHT
PARTLY CLOUDY. AREAS OF FOG AFTER MIDNIGHT. LOWS
32 TO 41.
MONDAY
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 54 TO 67.
MONDAY NIGHT AND TUESDAY
MOSTLY CLEAR. AREAS OF FOG THROUGH
THE DAY. LOWS 33 TO 42. HIGHS 57 TO 70.
TUESDAY NIGHT
INCREASING CLOUDS. PATCHY FOG AFTER MIDNIGHT.
LOWS 34 TO 44.
WEDNESDAY THROUGH THURSDAY
AREAS OF FOG IN THE MORNING. AREAS
OF FOG THROUGH THE DAY. MOSTLY CLEAR. HIGHS 62 TO 77. LOWS 36 TO
46.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS 40 TO 49. HIGHS
67 TO 80.
TEMPERATURE
MCCALL 72 39 54
=
IDZ013-121600-
BOISE MOUNTAINS-
230 AM MDT SAT SEP 12 2026
TODAY
MOSTLY SUNNY. HIGHS 69 TO 84.
TONIGHT
MOSTLY CLOUDY. PATCHY SMOKE. LOWS 37 TO 51.
SUNDAY
PATCHY FOG AND SMOKE IN THE MORNING. SUNNY. MUCH COOLER
WITH HIGHS 52 TO 67.
SUNDAY NIGHT
MOSTLY CLEAR. AREAS OF FOG AFTER MIDNIGHT. COLDER
WITH LOWS 28 TO 43.
MONDAY
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 56 TO 71.
MONDAY NIGHT
CLEAR. PATCHY FOG AFTER MIDNIGHT. LOWS 29 TO 44.
TUESDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 61 TO 75.
TUESDAY NIGHT THROUGH THURSDAY
MOSTLY CLEAR. LOWS 31 TO 46.
HIGHS 66 TO 81.
THURSDAY NIGHT AND FRIDAY
MOSTLY CLEAR. LOWS 36 TO 51. HIGHS
70 TO 84.
TEMPERATURE
IDAHO CITY 82 41 64
=
IDZ028-121600-
CAMAS PRAIRIE-
230 AM MDT SAT SEP 12 2026
TODAY
MOSTLY SUNNY. HIGHS 77 TO 82. LIGHT WINDS THIS MORNING,
BECOMING SOUTHWEST AROUND 10 MPH WITH GUSTS TO 25 MPH THIS
AFTERNOON.
TONIGHT
PATCHY SMOKE IN THE EVENING. MOSTLY CLOUDY. LOWS 43 TO
48. EAST WINDS UP TO 10 MPH IN THE EVENING, SHIFTING TO WEST
AFTER MIDNIGHT. GUSTS TO 25 MPH.
SUNDAY
SUNNY. PATCHY SMOKE. MUCH COOLER WITH HIGHS 62 TO 67.
BREEZY. WEST WINDS 10 TO 20 MPH WITH GUSTS TO 35 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. COLDER WITH LOWS 29 TO 34. BREEZY.
WEST WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH.
MONDAY
SUNNY. HIGHS 65 TO 70. WEST WINDS 10 TO 15 MPH.
MONDAY NIGHT
CLEAR. PATCHY FOG AFTER MIDNIGHT. LOWS 30 TO 36.
TUESDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 69 TO 74.
TUESDAY NIGHT THROUGH FRIDAY
MOSTLY CLEAR. LOWS 34 TO 44.
HIGHS 71 TO 81.
TEMPERATURE
FAIRFIELD 79 44 65
=
IDZ033-121600-
UPPER WEISER RIVER-
230 AM MDT SAT SEP 12 2026
TODAY
INCREASING CLOUDS. HIGHS 77 TO 83. SOUTH WINDS UP TO
10 MPH.
TONIGHT
PATCHY SMOKE IN THE EVENING. PARTLY CLOUDY IN THE
EVENING, THEN MOSTLY CLOUDY WITH A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. CHANCE OF RAIN
30 PERCENT. LOWS 47 TO 52. EAST WINDS UP TO 10 MPH IN THE
EVENING, SHIFTING TO SOUTHWEST AFTER MIDNIGHT. GUSTS TO 25 MPH.
SUNDAY
PARTLY CLOUDY WITH A CHANCE OF SHOWERS. A SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. CHANCE OF RAIN 30 PERCENT.
MUCH COOLER WITH HIGHS 62 TO 68. SOUTHWEST WINDS 10 TO 15 MPH
WITH GUSTS TO 30 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
PATCHY FOG AFTER MIDNIGHT. LOWS 40 TO 45. SOUTHWEST WINDS UP TO
10 MPH. GUSTS TO 20 MPH IN THE EVENING.
MONDAY
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 64 TO 71.
LIGHT WINDS.
MONDAY NIGHT THROUGH WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 41 TO
50. HIGHS 69 TO 78.
THURSDAY THROUGH FRIDAY
MOSTLY CLEAR. HIGHS 75 TO 83. LOWS
49 TO 54.
TEMPERATURE
COUNCIL 81 49 65
CAMBRIDGE 82 47 68
=
ORZ064-121600-
OREGON LOWER TREASURE VALLEY-
230 AM MDT SAT SEP 12 2026 /130 AM PDT SAT SEP 12 2026/
TODAY
INCREASING CLOUDS. HIGHS 81 TO 86. LIGHT WINDS THIS
MORNING, BECOMING SOUTHEAST UP TO 10 MPH THIS AFTERNOON.
TONIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. CHANCE OF RAIN 20 PERCENT. LOWS
49 TO 54. NORTHEAST WINDS UP TO 10 MPH IN THE EVENING, SHIFTING
TO WEST AFTER MIDNIGHT. GUSTS TO 30 MPH.
SUNDAY
SUNNY, COOLER WITH HIGHS 67 TO 72. WEST WINDS 10 TO
15 MPH WITH GUSTS TO 30 MPH.
SUNDAY NIGHT
DECREASING CLOUDS. LOWS 41 TO 47. WEST WINDS
10 TO 15 MPH. GUSTS TO 25 MPH IN THE EVENING.
MONDAY
SUNNY. HIGHS 69 TO 74. LIGHT WINDS.
MONDAY NIGHT
CLEAR. LOWS 41 TO 47.
TUESDAY THROUGH FRIDAY
MOSTLY CLEAR. HIGHS 74 TO 84. LOWS
44 TO 53.
TEMPERATURE
ONTARIO 84 51 70
=
IDZ012-121600-
LOWER TREASURE VALLEY-
230 AM MDT SAT SEP 12 2026
TODAY
MOSTLY SUNNY. HIGHS 82 TO 87. LIGHT WINDS.
TONIGHT
PATCHY SMOKE IN THE EVENING. PARTLY CLOUDY. LOWS 49 TO
54. SOUTHEAST WINDS UP TO 10 MPH IN THE EVENING, SHIFTING TO WEST
AFTER MIDNIGHT. GUSTS TO 30 MPH.
SUNDAY
SUNNY. MUCH COOLER WITH HIGHS 67 TO 72. WEST WINDS
10 TO 15 MPH WITH GUSTS TO 25 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 42 TO 47. WEST WINDS 10 TO
15 MPH. GUSTS TO 25 MPH IN THE EVENING.
MONDAY
SUNNY. HIGHS 68 TO 73. NORTHWEST WINDS UP TO 10 MPH.
MONDAY NIGHT
CLEAR. PATCHY FOG AFTER MIDNIGHT. LOWS 42 TO 47.
TUESDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 72 TO 77.
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 44 TO 49.
WEDNESDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 74 TO 79.
WEDNESDAY NIGHT THROUGH FRIDAY
MOSTLY CLEAR. LOWS 45 TO 53.
HIGHS 77 TO 84.
TEMPERATURE
CALDWELL 86 52 71
=
IDZ014-121600-
UPPER TREASURE VALLEY-
230 AM MDT SAT SEP 12 2026
TODAY
MOSTLY SUNNY. PATCHY SMOKE THIS AFTERNOON. HIGHS 85 TO
90. SOUTHEAST WINDS UP TO 10 MPH.
TONIGHT
PATCHY SMOKE IN THE EVENING. PARTLY CLOUDY. LOWS 50 TO
55. SOUTHEAST WINDS 10 TO 15 MPH IN THE EVENING, SHIFTING TO WEST
AFTER MIDNIGHT. GUSTS TO 30 MPH.
SUNDAY
SUNNY. MUCH COOLER WITH HIGHS 68 TO 73. BREEZY.
NORTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 41 TO 47. BREEZY. NORTHWEST
WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH.
MONDAY
SUNNY. HIGHS 69 TO 74. NORTHWEST WINDS 10 TO 15 MPH.
MONDAY NIGHT
CLEAR. PATCHY FOG AFTER MIDNIGHT. LOWS 40 TO 47.
TUESDAY THROUGH THURSDAY NIGHT
MOSTLY CLEAR. HIGHS 74 TO 84.
LOWS 44 TO 53.
FRIDAY
SUNNY. HIGHS 81 TO 86.
TEMPERATURE
BOISE 86 54 69
MOUNTAIN HOME 89 52 72
=
IDZ016-121600-
WESTERN MAGIC VALLEY-
230 AM MDT SAT SEP 12 2026
TODAY
MOSTLY SUNNY. PATCHY SMOKE THIS AFTERNOON. HIGHS 82 TO
87. SOUTHEAST WINDS UP TO 10 MPH THIS MORNING, SHIFTING TO WEST
THIS AFTERNOON. GUSTS TO 20 MPH.
TONIGHT
INCREASING CLOUDS. PATCHY SMOKE IN THE EVENING. LOWS
51 TO 56. EAST WINDS UP TO 10 MPH WITH GUSTS TO 20 MPH IN THE
EVENING, SHIFTING TO SOUTHWEST WITH GUSTS TO 30 MPH AFTER
MIDNIGHT.
SUNDAY
SUNNY. PATCHY SMOKE IN THE AFTERNOON. MUCH COOLER WITH
HIGHS 66 TO 71. WEST WINDS 10 TO 15 MPH WITH GUSTS TO 30 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. COLDER WITH LOWS 39 TO 44. WEST
WINDS 10 TO 15 MPH. GUSTS TO 30 MPH IN THE EVENING.
MONDAY
SUNNY. HIGHS 66 TO 71. WEST WINDS 10 TO 15 MPH.
MONDAY NIGHT
CLEAR. LOWS 38 TO 43.
TUESDAY THROUGH WEDNESDAY NIGHT
MOSTLY CLEAR. HIGHS 72 TO 78.
LOWS 41 TO 48.
THURSDAY THROUGH FRIDAY
MOSTLY CLEAR. HIGHS 78 TO 85. LOWS
46 TO 51.
TEMPERATURE
JEROME 83 54 68
TWIN FALLS 84 54 68
=
IDZ029-121600-
OWYHEE MOUNTAINS-
230 AM MDT SAT SEP 12 2026
TODAY
MOSTLY SUNNY. PATCHY SMOKE THIS AFTERNOON. HIGHS 77 TO
83. BREEZY.
TONIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
41 TO 49. BREEZY.
SUNDAY
SUNNY. MUCH COOLER WITH HIGHS 60 TO 65.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 36 TO 43.
MONDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 61 TO 67.
MONDAY NIGHT
CLEAR. LOWS 38 TO 46.
TUESDAY THROUGH WEDNESDAY NIGHT
MOSTLY CLEAR. HIGHS 65 TO 73.
LOWS 41 TO 49.
THURSDAY THROUGH FRIDAY
MOSTLY CLEAR. HIGHS 71 TO 81. LOWS
47 TO 53.
=
IDZ015-121600-
SOUTHWEST HIGHLANDS-
230 AM MDT SAT SEP 12 2026
TODAY
MOSTLY SUNNY. PATCHY SMOKE THIS AFTERNOON. HIGHS 81 TO
87. BREEZY.
TONIGHT
PARTLY CLOUDY. LOWS 45 TO 51. BREEZY.
SUNDAY
SUNNY. PATCHY SMOKE IN THE AFTERNOON. MUCH COOLER WITH
HIGHS 66 TO 71.
SUNDAY NIGHT
MOSTLY CLEAR. COLDER WITH LOWS 35 TO 41.
MONDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 65 TO 70.
MONDAY NIGHT THROUGH WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 37 TO
47. HIGHS 70 TO 75.
THURSDAY THROUGH FRIDAY
MOSTLY CLEAR. HIGHS 76 TO 83. LOWS
46 TO 51.
=
IDZ030-121600-
SOUTHERN TWIN FALLS COUNTY-
230 AM MDT SAT SEP 12 2026
TODAY
MOSTLY SUNNY. PATCHY SMOKE THIS AFTERNOON. HIGHS 83 TO
88.
TONIGHT
PATCHY SMOKE IN THE EVENING. PARTLY CLOUDY. LOWS 50 TO
55.
SUNDAY
SUNNY. PATCHY SMOKE IN THE AFTERNOON. MUCH COOLER WITH
HIGHS 67 TO 72.
SUNDAY NIGHT
MOSTLY CLEAR. COLDER WITH LOWS 36 TO 41.
MONDAY
SUNNY. HIGHS 65 TO 70.
MONDAY NIGHT THROUGH WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 37 TO
47. HIGHS 71 TO 77.
THURSDAY THROUGH FRIDAY
MOSTLY CLEAR. HIGHS 77 TO 84. LOWS
46 TO 51.
=
ORZ062-121600-
BAKER COUNTY-
130 AM PDT SAT SEP 12 2026
TODAY
INCREASING CLOUDS. HIGHS 75 TO 82. LIGHT WINDS THIS
MORNING, BECOMING SOUTH 10 TO 15 MPH WITH GUSTS TO 25 MPH THIS
AFTERNOON.
TONIGHT
PARTLY CLOUDY IN THE EVENING. A SLIGHT CHANCE OF
THUNDERSTORMS. RAIN SHOWERS LIKELY, MAINLY AFTER MIDNIGHT. PATCHY
SMOKE IN THE EVENING. AREAS OF FOG AFTER MIDNIGHT. CHANCE OF RAIN
60 PERCENT. LOWS 38 TO 49. SOUTHEAST WINDS 10 TO 15 MPH IN THE
EVENING, SHIFTING TO NORTHWEST AFTER MIDNIGHT. GUSTS TO 35 MPH.
SUNDAY
AREAS OF FOG IN THE MORNING. A CHANCE OF RAIN SHOWERS
IN THE MORNING, THEN RAIN SHOWERS LIKELY WITH A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. CHANCE OF RAIN 60 PERCENT. MUCH
COOLER WITH HIGHS 56 TO 66. WEST WINDS 10 TO 15 MPH WITH GUSTS TO
25 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS IN
THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. PATCHY FOG IN THE
EVENING. AREAS OF FOG AFTER MIDNIGHT. CHANCE OF RAIN 30 PERCENT.
LOWS 32 TO 45. WEST WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
MONDAY
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 64 TO 71.
LIGHT WINDS.
MONDAY NIGHT AND TUESDAY
MOSTLY CLEAR. AREAS OF FOG THROUGH
THE DAY. LOWS 34 TO 46. HIGHS 67 TO 75.
TUESDAY NIGHT
DECREASING CLOUDS. PATCHY FOG AFTER MIDNIGHT.
LOWS 34 TO 47.
WEDNESDAY
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 69 TO 77.
WEDNESDAY NIGHT THROUGH FRIDAY
MOSTLY CLEAR. LOWS 36 TO 51.
HIGHS 74 TO 83.
TEMPERATURE
BAKER CITY 80 38 60
=
ORZ061-121600-
HARNEY COUNTY-
130 AM PDT SAT SEP 12 2026
TODAY
MOSTLY SUNNY. PATCHY SMOKE THIS MORNING. AREAS OF SMOKE
THIS AFTERNOON. HIGHS 74 TO 82. BREEZY. SOUTH WINDS 10 TO 20 MPH.
GUSTS TO 35 MPH THIS AFTERNOON.
TONIGHT
PATCHY SMOKE IN THE EVENING. A SLIGHT CHANCE OF
THUNDERSTORMS. RAIN SHOWERS, MAINLY AFTER MIDNIGHT. CHANCE OF
RAIN 80 PERCENT. LOWS 36 TO 43. BREEZY. WEST WINDS 10 TO 20 MPH
WITH GUSTS TO 35 MPH.
SUNDAY
MOSTLY SUNNY. MUCH COOLER WITH HIGHS 56 TO 62. WEST
WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. AREAS OF FOG AFTER MIDNIGHT. LOWS
30 TO 40. NORTHWEST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH IN THE
EVENING.
MONDAY
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 61 TO 68.
LIGHT WINDS.
MONDAY NIGHT THROUGH WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS 34 TO
47. HIGHS 65 TO 74.
THURSDAY THROUGH FRIDAY
MOSTLY CLEAR. HIGHS 71 TO 81. LOWS
40 TO 50.
TEMPERATURE
BURNS 79 36 58
=
ORZ063-121600-
MALHEUR COUNTY-
230 AM MDT SAT SEP 12 2026 /130 AM PDT SAT SEP 12 2026/
TODAY
MOSTLY SUNNY. PATCHY SMOKE THIS AFTERNOON. HIGHS 79 TO
86. SOUTH WINDS 10 TO 15 MPH. GUSTS TO 35 MPH THIS AFTERNOON.
TONIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. PATCHY
SMOKE IN THE EVENING. LOWS 41 TO 51. BREEZY. SOUTHWEST WINDS
10 TO 20 MPH WITH GUSTS TO 35 MPH.
SUNDAY
SUNNY. MUCH COOLER WITH HIGHS 61 TO 68. BREEZY. WEST
WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. AREAS OF FOG AFTER MIDNIGHT. LOWS
35 TO 45. WEST WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
MONDAY
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 65 TO 71.
WEST WINDS UP TO 10 MPH.
MONDAY NIGHT AND TUESDAY
MOSTLY CLEAR. LOWS 37 TO 47. HIGHS
70 TO 75.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLEAR. PATCHY FOG THROUGH
THE DAY. LOWS 40 TO 49. HIGHS 71 TO 76.
WEDNESDAY NIGHT THROUGH FRIDAY
MOSTLY CLEAR. LOWS 41 TO 51.
HIGHS 75 TO 83.
=
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