446
FPUS55 KBOI 231139
ZFPBOI
ZONE FORECASTS FOR SOUTHWEST IDAHO/SOUTHEAST OREGON
NATIONAL WEATHER SERVICE BOISE ID
438 AM MST FRI JAN 23 2026
FORECAST UPDATED.
SPOT TEMPERATURES ARE FOR TODAY, TONIGHT, AND SATURDAY.
IDZ011-231900-
WEST CENTRAL MOUNTAINS-
438 AM MST FRI JAN 23 2026
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
REST OF TODAY
AREAS OF FOG EARLY THIS MORNING. PARTLY CLOUDY.
HIGHS 23 TO 30.
TONIGHT
INCREASING CLOUDS. PATCHY FOG AFTER MIDNIGHT. COLDER
WITH LOWS 2 TO 13.
SATURDAY
SUNNY. HIGHS 21 TO 31.
SATURDAY NIGHT
MOSTLY CLEAR. PATCHY FOG AFTER MIDNIGHT. LOWS
2 TO 14.
SUNDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 23 TO 33.
SUNDAY NIGHT
INCREASING CLOUDS. LOWS 7 TO 19. WIND CHILLS AS
LOW AS 5 BELOW.
MONDAY AND MONDAY NIGHT
MOSTLY CLOUDY. HIGHS 27 TO 36. LOWS
13 TO 23. WIND CHILLS AS LOW AS 5 BELOW.
TUESDAY
MOSTLY SUNNY. HIGHS 30 TO 39.
TUESDAY NIGHT AND WEDNESDAY
PARTLY CLOUDY. PATCHY FOG THROUGH
THE DAY. LOWS 16 TO 26. HIGHS 32 TO 40.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A SLIGHT CHANCE OF SNOW AFTER
MIDNIGHT. PATCHY FOG AFTER MIDNIGHT. CHANCE OF SNOW 20 PERCENT.
LOWS 18 TO 27.
THURSDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF SNOW IN THE
MORNING. AREAS OF FOG IN THE MORNING. CHANCE OF SNOW 20 PERCENT.
HIGHS 31 TO 41.
TEMPERATURE
MCCALL 27 2 26
=
IDZ013-231900-
BOISE MOUNTAINS-
438 AM MST FRI JAN 23 2026
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
REST OF TODAY
AREAS OF FOG LATE. PATCHY FOG THIS MORNING.
MOSTLY CLOUDY. HIGHS 23 TO 32.
TONIGHT
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS ZERO TO
15 ABOVE ZERO.
SATURDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 22 TO 33.
SATURDAY NIGHT
CLEAR. LOWS 2 TO 17.
SUNDAY
SUNNY. HIGHS 27 TO 38.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 6 TO 21. WIND CHILLS AS LOW AS
5 BELOW.
MONDAY
MOSTLY SUNNY. HIGHS 31 TO 43. WIND CHILLS AS LOW AS
ZERO IN THE MORNING.
MONDAY NIGHT
DECREASING CLOUDS. LOWS 11 TO 25.
TUESDAY THROUGH WEDNESDAY
PARTLY CLOUDY. HIGHS 36 TO 47. LOWS
13 TO 28.
WEDNESDAY NIGHT
MOSTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS
16 TO 30.
THURSDAY
PATCHY FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 37 TO
47.
TEMPERATURE
IDAHO CITY 32 11 32
=
IDZ028-231900-
CAMAS PRAIRIE-
438 AM MST FRI JAN 23 2026
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
REST OF TODAY
PATCHY FOG EARLY THIS MORNING. MOSTLY CLOUDY.
HIGHS 26 TO 31. LIGHT WINDS.
TONIGHT
INCREASING CLOUDS. LOWS 9 TO 14. LIGHT WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS 29 TO 34. WEST WINDS 10 TO
15 MPH.
SATURDAY NIGHT
CLEAR. LOWS 9 TO 14. WEST WINDS 10 TO 15 MPH.
SUNDAY
SUNNY. HIGHS 31 TO 36. WEST WINDS AROUND 10 MPH. WIND
CHILLS AS LOW AS 2 BELOW IN THE MORNING.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 12 TO 17.
MONDAY THROUGH WEDNESDAY
PARTLY CLOUDY. HIGHS 35 TO 43. LOWS
15 TO 23.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS 20 TO 25.
THURSDAY
MOSTLY SUNNY. HIGHS 37 TO 43.
TEMPERATURE
FAIRFIELD 29 9 31
=
IDZ033-231900-
UPPER WEISER RIVER-
438 AM MST FRI JAN 23 2026
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
REST OF TODAY
PATCHY FOG EARLY THIS MORNING. MOSTLY CLOUDY.
HIGHS 28 TO 33. NORTH WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
TONIGHT
DECREASING CLOUDS. LOWS 15 TO 20. NORTH WINDS 10 TO
15 MPH WITH GUSTS TO 25 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS 28 TO 33. NORTH WINDS UP TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS 15 TO 20. LIGHT WINDS.
SUNDAY
SUNNY. HIGHS 28 TO 33. LIGHT WINDS.
SUNDAY NIGHT
INCREASING CLOUDS. LOWS 19 TO 24.
MONDAY AND MONDAY NIGHT
MOSTLY CLOUDY. HIGHS 31 TO 36. LOWS
21 TO 26.
TUESDAY AND TUESDAY NIGHT
PARTLY CLOUDY. HIGHS 32 TO 37. LOWS
24 TO 29.
WEDNESDAY AND WEDNESDAY NIGHT
MOSTLY CLOUDY. HIGHS 33 TO 38.
LOWS 26 TO 31.
THURSDAY
MOSTLY SUNNY. HIGHS 34 TO 39.
TEMPERATURE
COUNCIL 33 16 30
CAMBRIDGE 31 17 32
=
ORZ064-231900-
OREGON LOWER TREASURE VALLEY-
438 AM MST FRI JAN 23 2026 /338 AM PST FRI JAN 23 2026/
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
REST OF TODAY
MOSTLY CLOUDY. HIGHS 32 TO 37. NORTHWEST WINDS
10 TO 15 MPH WITH GUSTS TO 25 MPH.
TONIGHT
MOSTLY CLOUDY. LOWS 17 TO 22. NORTHWEST WINDS 10 TO
15 MPH WITH GUSTS TO 25 MPH.
SATURDAY
PARTLY SUNNY IN THE MORNING, THEN CLEARING. HIGHS
33 TO 38. NORTHWEST WINDS UP TO 10 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS 16 TO 21. LIGHT WINDS.
SUNDAY
SUNNY. HIGHS 32 TO 37. LIGHT WINDS.
SUNDAY NIGHT
INCREASING CLOUDS. LOWS 20 TO 25.
MONDAY AND MONDAY NIGHT
MOSTLY CLOUDY. HIGHS 33 TO 38. LOWS
21 TO 26.
TUESDAY
MOSTLY SUNNY. HIGHS 34 TO 39.
TUESDAY NIGHT THROUGH WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS
24 TO 31. HIGHS 36 TO 41.
THURSDAY
MOSTLY SUNNY. HIGHS 37 TO 42.
TEMPERATURE
ONTARIO 36 19 36
=
IDZ012-231900-
LOWER TREASURE VALLEY-
438 AM MST FRI JAN 23 2026
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
REST OF TODAY
MOSTLY CLOUDY. PATCHY FOG EARLY THIS MORNING.
HIGHS 31 TO 36. NORTHWEST WINDS 10 TO 15 MPH.
TONIGHT
MOSTLY CLOUDY. LOWS 17 TO 22. NORTHWEST WINDS 10 TO
15 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS 32 TO 37. NORTHWEST WINDS 10 TO
15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS 17 TO 22. NORTHWEST WINDS UP
TO 10 MPH.
SUNDAY
SUNNY. HIGHS 32 TO 37. LIGHT WINDS.
SUNDAY NIGHT
INCREASING CLOUDS. LOWS 20 TO 25.
MONDAY AND MONDAY NIGHT
MOSTLY CLOUDY. HIGHS 34 TO 39. LOWS
22 TO 27.
TUESDAY AND TUESDAY NIGHT
PARTLY CLOUDY. HIGHS 36 TO 41. LOWS
24 TO 29.
WEDNESDAY
INCREASING CLOUDS. HIGHS 36 TO 41.
WEDNESDAY NIGHT
MOSTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS
27 TO 32.
THURSDAY
PATCHY FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 38 TO
43.
TEMPERATURE
CALDWELL 33 19 34
=
IDZ014-231900-
UPPER TREASURE VALLEY-
438 AM MST FRI JAN 23 2026
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
REST OF TODAY
CLOUDY. PATCHY FOG THIS MORNING. HIGHS 29 TO 34.
NORTHWEST WINDS 10 TO 15 MPH.
TONIGHT
MOSTLY CLOUDY. LOWS 16 TO 21. WEST WINDS AROUND 10 MPH
IN THE EVENING, SHIFTING TO EAST UP TO 10 MPH AFTER MIDNIGHT.
GUSTS TO 20 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS 30 TO 35. NORTHWEST WINDS 10 TO
15 MPH.
SATURDAY NIGHT
CLEAR. LOWS 16 TO 21. NORTHWEST WINDS 10 TO
15 MPH.
SUNDAY
SUNNY. HIGHS 32 TO 37. NORTHWEST WINDS UP TO 10 MPH.
SUNDAY NIGHT
INCREASING CLOUDS. LOWS 18 TO 24.
MONDAY AND MONDAY NIGHT
MOSTLY CLOUDY. HIGHS 35 TO 40. LOWS
21 TO 26.
TUESDAY AND TUESDAY NIGHT
PARTLY CLOUDY. HIGHS 36 TO 41. LOWS
23 TO 28.
WEDNESDAY AND WEDNESDAY NIGHT
MOSTLY CLOUDY. HIGHS 37 TO 42.
LOWS 25 TO 30.
THURSDAY
MOSTLY SUNNY. HIGHS 38 TO 43.
TEMPERATURE
BOISE 31 19 32
MOUNTAIN HOME 30 17 33
=
IDZ016-231900-
WESTERN MAGIC VALLEY-
438 AM MST FRI JAN 23 2026
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
REST OF TODAY
CLOUDY. HIGHS 25 TO 31. WEST WINDS UP TO 10 MPH.
TONIGHT
MOSTLY CLOUDY. LOWS 15 TO 20. SOUTHWEST WINDS UP TO
10 MPH.
SATURDAY
DECREASING CLOUDS. HIGHS 26 TO 31. WEST WINDS 10 TO
15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS 16 TO 21. WEST WINDS 10 TO
15 MPH.
SUNDAY
SUNNY. HIGHS 27 TO 33. WEST WINDS 10 TO 15 MPH.
SUNDAY NIGHT
INCREASING CLOUDS. LOWS 19 TO 24.
MONDAY AND MONDAY NIGHT
MOSTLY CLOUDY. HIGHS 33 TO 38. LOWS
21 TO 26.
TUESDAY AND TUESDAY NIGHT
PARTLY CLOUDY. HIGHS 34 TO 40. LOWS
23 TO 28.
WEDNESDAY AND WEDNESDAY NIGHT
INCREASING CLOUDS. HIGHS 36 TO
41. LOWS 25 TO 30.
THURSDAY
MOSTLY SUNNY. HIGHS 36 TO 41.
TEMPERATURE
JEROME 25 18 26
TWIN FALLS 27 16 28
=
IDZ029-231900-
OWYHEE MOUNTAINS-
438 AM MST FRI JAN 23 2026
REST OF TODAY
MOSTLY CLOUDY. HIGHS 26 TO 32.
TONIGHT
PARTLY CLOUDY. LOWS 11 TO 19.
SATURDAY
SUNNY. HIGHS 28 TO 33.
SATURDAY NIGHT
CLEAR. LOWS 13 TO 21.
SUNDAY
SUNNY. HIGHS 33 TO 40.
SUNDAY NIGHT
INCREASING CLOUDS. LOWS 21 TO 26.
MONDAY AND MONDAY NIGHT
MOSTLY CLOUDY. HIGHS 34 TO 44. LOWS
22 TO 27.
TUESDAY AND TUESDAY NIGHT
PARTLY CLOUDY. HIGHS 36 TO 46. LOWS
25 TO 30.
WEDNESDAY AND WEDNESDAY NIGHT
MOSTLY CLOUDY. HIGHS 37 TO 47.
LOWS 26 TO 31.
THURSDAY
MOSTLY SUNNY. HIGHS 37 TO 47.
=
IDZ015-231900-
SOUTHWEST HIGHLANDS-
438 AM MST FRI JAN 23 2026
REST OF TODAY
MOSTLY CLOUDY. COOLER WITH HIGHS 28 TO 36.
TONIGHT
INCREASING CLOUDS. PATCHY FOG AFTER MIDNIGHT. LOWS
11 TO 16.
SATURDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 30 TO 37.
SATURDAY NIGHT
CLEAR. LOWS 11 TO 18.
SUNDAY
SUNNY. HIGHS 34 TO 44. WIND CHILLS AS LOW AS ZERO IN
THE MORNING.
SUNDAY NIGHT
INCREASING CLOUDS. LOWS 16 TO 23.
MONDAY AND MONDAY NIGHT
MOSTLY CLOUDY. HIGHS 39 TO 49. LOWS
19 TO 24.
TUESDAY AND TUESDAY NIGHT
PARTLY CLOUDY. HIGHS 40 TO 50. LOWS
21 TO 27.
WEDNESDAY AND WEDNESDAY NIGHT
MOSTLY CLOUDY. HIGHS 41 TO 51.
LOWS 25 TO 30.
THURSDAY
MOSTLY SUNNY. HIGHS 41 TO 51.
=
IDZ030-231900-
SOUTHERN TWIN FALLS COUNTY-
438 AM MST FRI JAN 23 2026
REST OF TODAY
MOSTLY CLOUDY. COLDER WITH HIGHS 25 TO 30.
TONIGHT
MOSTLY CLOUDY. LOWS 13 TO 18.
SATURDAY
DECREASING CLOUDS. HIGHS 27 TO 32.
SATURDAY NIGHT
CLEAR. LOWS 14 TO 19.
SUNDAY
SUNNY. HIGHS 31 TO 36.
SUNDAY NIGHT
INCREASING CLOUDS. LOWS 19 TO 24.
MONDAY AND MONDAY NIGHT
MOSTLY CLOUDY. HIGHS 37 TO 44. LOWS
22 TO 27.
TUESDAY
MOSTLY SUNNY. HIGHS 38 TO 46.
TUESDAY NIGHT
INCREASING CLOUDS. LOWS 23 TO 28.
WEDNESDAY
MOSTLY SUNNY. HIGHS 38 TO 46.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS 26 TO 31.
THURSDAY
MOSTLY SUNNY. HIGHS 39 TO 46.
=
ORZ062-231900-
BAKER COUNTY-
338 AM PST FRI JAN 23 2026
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
REST OF TODAY
AREAS OF FOG EARLY THIS MORNING. MOSTLY CLOUDY.
HIGHS 29 TO 35. BRISK. NORTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
30 MPH.
TONIGHT
PARTLY CLOUDY. LOWS 11 TO 17. NORTHWEST WINDS 10 TO
15 MPH WITH GUSTS TO 25 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS 30 TO 35. NORTHWEST WINDS UP TO
10 MPH.
SATURDAY NIGHT
CLEAR. LOWS 11 TO 19. NORTHWEST WINDS UP TO
10 MPH.
SUNDAY
SUNNY. HIGHS 29 TO 35. LIGHT WINDS IN THE MORNING,
BECOMING SOUTHEAST UP TO 10 MPH IN THE AFTERNOON.
SUNDAY NIGHT
INCREASING CLOUDS. LOWS 17 TO 23.
MONDAY AND MONDAY NIGHT
MOSTLY CLOUDY. HIGHS 30 TO 37. LOWS
19 TO 25.
TUESDAY AND TUESDAY NIGHT
PARTLY CLOUDY. HIGHS 30 TO 38. LOWS
22 TO 28.
WEDNESDAY
PARTLY SUNNY. HIGHS 31 TO 39.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A SLIGHT CHANCE OF SNOW IN THE
EVENING. CHANCE OF SNOW 20 PERCENT. LOWS 24 TO 30.
THURSDAY
MOSTLY SUNNY. HIGHS 31 TO 40.
TEMPERATURE
BAKER CITY 32 11 34
=
ORZ061-231900-
HARNEY COUNTY-
338 AM PST FRI JAN 23 2026
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
REST OF TODAY
DECREASING CLOUDS. PATCHY FOG LATE. AREAS OF FOG
THIS MORNING. HIGHS 33 TO 39. NORTH WINDS UP TO 10 MPH.
TONIGHT
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. COLDER WITH
LOWS 8 TO 17. NORTH WINDS UP TO 10 MPH.
SATURDAY
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 33 TO 39.
LIGHT WINDS.
SATURDAY NIGHT
CLEAR. LOWS 7 TO 18. LIGHT WINDS.
SUNDAY
SUNNY. HIGHS 39 TO 44. LIGHT WINDS.
SUNDAY NIGHT
INCREASING CLOUDS. LOWS 14 TO 25.
MONDAY AND MONDAY NIGHT
MOSTLY CLOUDY. HIGHS 41 TO 47. LOWS
16 TO 26.
TUESDAY
PATCHY FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 40 TO
47.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS 20 TO 28.
WEDNESDAY
MOSTLY CLOUDY. HIGHS 41 TO 48.
WEDNESDAY NIGHT
DECREASING CLOUDS. PATCHY FOG AFTER MIDNIGHT.
LOWS 21 TO 29.
THURSDAY
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. HIGHS
42 TO 49.
TEMPERATURE
BURNS 38 8 38
=
ORZ063-231900-
MALHEUR COUNTY-
438 AM MST FRI JAN 23 2026 /338 AM PST FRI JAN 23 2026/
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
REST OF TODAY
DECREASING CLOUDS. PATCHY FOG THIS MORNING.
HIGHS 30 TO 35. NORTH WINDS 10 TO 15 MPH.
TONIGHT
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. COLDER WITH
LOWS 11 TO 19. NORTHWEST WINDS 10 TO 15 MPH.
SATURDAY
PATCHY FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 31 TO
36. NORTHWEST WINDS UP TO 10 MPH.
SATURDAY NIGHT
CLEAR. LOWS 10 TO 19. WEST WINDS UP TO 10 MPH.
SUNDAY
SUNNY. HIGHS 32 TO 39. SOUTHWEST WINDS UP TO 10 MPH.
SUNDAY NIGHT
INCREASING CLOUDS. LOWS 16 TO 24.
MONDAY AND MONDAY NIGHT
MOSTLY CLOUDY. HIGHS 33 TO 43. LOWS
18 TO 25.
TUESDAY AND TUESDAY NIGHT
PARTLY CLOUDY. HIGHS 33 TO 43. LOWS
21 TO 27.
WEDNESDAY AND WEDNESDAY NIGHT
MOSTLY CLOUDY. HIGHS 34 TO 44.
LOWS 23 TO 30.
THURSDAY
MOSTLY SUNNY. HIGHS 35 TO 44.
=
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