889
FPUS55 KBOI 210913
ZFPBOI
ZONE FORECASTS FOR SOUTHWEST IDAHO/SOUTHEAST OREGON
NATIONAL WEATHER SERVICE BOISE ID
212 AM MST WED JAN 21 2026
SPOT TEMPERATURES ARE FOR TODAY, TONIGHT, AND THURSDAY.
IDZ011-211700-
WEST CENTRAL MOUNTAINS-
212 AM MST WED JAN 21 2026
...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
TODAY
MOSTLY SUNNY. PATCHY FOG. HIGHS 25 TO 34.
TONIGHT
PARTLY CLOUDY. LOWS 11 TO 21.
THURSDAY
MOSTLY SUNNY. HIGHS 24 TO 32.
THURSDAY NIGHT
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS
10 TO 20.
FRIDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 22 TO 33.
FRIDAY NIGHT AND SATURDAY
MOSTLY CLEAR. LOWS 3 TO 15. HIGHS
21 TO 30. WIND CHILLS AS LOW AS 10 BELOW.
SATURDAY NIGHT THROUGH SUNDAY NIGHT
PARTLY CLOUDY. LOWS 7 TO
19. HIGHS 23 TO 32. WIND CHILLS AS LOW AS 10 BELOW.
MONDAY
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF SNOW. HIGHS
25 TO 34. WIND CHILLS AS LOW AS ZERO IN THE MORNING.
MONDAY NIGHT
INCREASING CLOUDS. LOWS 16 TO 24.
TUESDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF SNOW IN THE MORNING.
CHANCE OF SNOW 20 PERCENT. HIGHS 30 TO 39.
TEMPERATURE
MCCALL 32 11 30
=
IDZ013-211700-
BOISE MOUNTAINS-
212 AM MST WED JAN 21 2026
...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
TODAY
PATCHY FOG THIS MORNING. MOSTLY SUNNY. HIGHS 28 TO 38.
TONIGHT
INCREASING CLOUDS. LOWS 9 TO 23.
THURSDAY
MOSTLY SUNNY. HIGHS 26 TO 36.
THURSDAY NIGHT
INCREASING CLOUDS. LOWS 9 TO 23.
FRIDAY
MOSTLY SUNNY. HIGHS 25 TO 38.
FRIDAY NIGHT THROUGH SATURDAY NIGHT
MOSTLY CLEAR. LOWS 3 TO
18. HIGHS 22 TO 35. WIND CHILLS AS LOW AS 10 BELOW.
SUNDAY THROUGH MONDAY
PARTLY CLOUDY. HIGHS 27 TO 40. LOWS 9 TO
24.
MONDAY NIGHT AND TUESDAY
MOSTLY CLOUDY. LOWS 13 TO 27. HIGHS
34 TO 45.
TEMPERATURE
IDAHO CITY 35 16 32
=
IDZ028-211700-
CAMAS PRAIRIE-
212 AM MST WED JAN 21 2026
...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
TODAY
DECREASING CLOUDS. HIGHS 35 TO 41. LIGHT WINDS.
TONIGHT
MOSTLY CLEAR IN THE EVENING, THEN BECOMING PARTLY
CLOUDY. LOWS 13 TO 18. LIGHT WINDS.
THURSDAY
DECREASING CLOUDS. HIGHS 33 TO 39. LIGHT WINDS.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS 14 TO 19. LIGHT WINDS.
FRIDAY
PARTLY SUNNY IN THE MORNING, THEN CLEARING. HIGHS 33 TO
39. LIGHT WINDS IN THE MORNING, BECOMING SOUTHWEST UP TO 10 MPH
IN THE AFTERNOON.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS 9 TO 14.
SATURDAY THROUGH SUNDAY
MOSTLY CLEAR. HIGHS 31 TO 41. LOWS
9 TO 14.
SUNDAY NIGHT THROUGH TUESDAY
PARTLY CLOUDY. LOWS 13 TO 21.
HIGHS 36 TO 46.
TEMPERATURE
FAIRFIELD 39 13 37
=
IDZ033-211700-
UPPER WEISER RIVER-
212 AM MST WED JAN 21 2026
...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
TODAY
MOSTLY CLOUDY. PATCHY FOG. HIGHS 25 TO 30. LIGHT WINDS.
TONIGHT
MOSTLY CLOUDY. LOWS 18 TO 23. LIGHT WINDS.
THURSDAY
DECREASING CLOUDS. HIGHS 24 TO 29. LIGHT WINDS.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS 19 TO 24. LIGHT WINDS.
FRIDAY
DECREASING CLOUDS. HIGHS 28 TO 33. NORTH WINDS 10 TO
15 MPH.
FRIDAY NIGHT
CLEAR. LOWS 17 TO 22.
SATURDAY
INCREASING CLOUDS. HIGHS 26 TO 31.
SATURDAY NIGHT THROUGH SUNDAY NIGHT
MOSTLY CLOUDY. LOWS 16 TO
25. HIGHS 26 TO 31.
MONDAY
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF SNOW. HIGHS
27 TO 32.
MONDAY NIGHT AND TUESDAY
MOSTLY CLOUDY. LOWS 22 TO 27. HIGHS
31 TO 36.
TEMPERATURE
COUNCIL 28 20 26
CAMBRIDGE 29 21 28
=
ORZ064-211700-
OREGON LOWER TREASURE VALLEY-
212 AM MST WED JAN 21 2026 /112 AM PST WED JAN 21 2026/
...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
TODAY
PATCHY FOG THIS MORNING. CLOUDY. HIGHS 26 TO 31. LIGHT
WINDS.
TONIGHT
MOSTLY CLOUDY. LOWS 19 TO 24. LIGHT WINDS.
THURSDAY
MOSTLY CLOUDY. HIGHS 25 TO 30. LIGHT WINDS.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS 20 TO 25. LIGHT WINDS.
FRIDAY
DECREASING CLOUDS. HIGHS 32 TO 37. NORTHWEST WINDS UP
TO 10 MPH.
FRIDAY NIGHT
CLEAR. LOWS 18 TO 23.
SATURDAY
MOSTLY SUNNY. HIGHS 32 TO 37.
SATURDAY NIGHT THROUGH TUESDAY
MOSTLY CLOUDY. LOWS 17 TO 27.
HIGHS 28 TO 37.
TEMPERATURE
ONTARIO 29 20 28
=
IDZ012-211700-
LOWER TREASURE VALLEY-
212 AM MST WED JAN 21 2026
...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
TODAY
CLOUDY. PATCHY FOG. HIGHS 26 TO 31. LIGHT WINDS.
TONIGHT
MOSTLY CLOUDY. LOWS 19 TO 24. LIGHT WINDS.
THURSDAY
MOSTLY CLOUDY. PATCHY FOG IN THE AFTERNOON. HIGHS
25 TO 30. LIGHT WINDS.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS 20 TO 25. LIGHT WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS 31 TO 36. LIGHT WINDS IN THE
MORNING, BECOMING NORTHWEST 10 TO 15 MPH IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS 18 TO 23.
SATURDAY
MOSTLY SUNNY. HIGHS 31 TO 36.
SATURDAY NIGHT THROUGH TUESDAY
MOSTLY CLOUDY. LOWS 17 TO 27.
HIGHS 30 TO 38.
TEMPERATURE
CALDWELL 29 21 28
=
IDZ014-211700-
UPPER TREASURE VALLEY-
212 AM MST WED JAN 21 2026
...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
TODAY
MOSTLY CLOUDY. PATCHY FOG. HIGHS 27 TO 32. SOUTHEAST
WINDS UP TO 10 MPH.
TONIGHT
INCREASING CLOUDS. LOWS 17 TO 22. LIGHT WINDS.
THURSDAY
MOSTLY CLOUDY. PATCHY FOG IN THE AFTERNOON. HIGHS
24 TO 29. LIGHT WINDS.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS 18 TO 23. LIGHT WINDS.
FRIDAY
DECREASING CLOUDS. HIGHS 27 TO 32. LIGHT WINDS IN THE
MORNING, BECOMING NORTHWEST 10 TO 15 MPH IN THE AFTERNOON.
FRIDAY NIGHT AND SATURDAY
PARTLY CLOUDY. LOWS 16 TO 21. HIGHS
29 TO 34.
SATURDAY NIGHT THROUGH TUESDAY
MOSTLY CLOUDY. LOWS 17 TO 27.
HIGHS 30 TO 39.
TEMPERATURE
BOISE 29 22 27
MOUNTAIN HOME 30 19 27
=
IDZ016-211700-
WESTERN MAGIC VALLEY-
212 AM MST WED JAN 21 2026
...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
TODAY
DECREASING CLOUDS. PATCHY FOG THIS MORNING. HIGHS 26 TO
31. EAST WINDS UP TO 10 MPH.
TONIGHT
PARTLY CLOUDY. LOWS 18 TO 23. LIGHT WINDS.
THURSDAY
DECREASING CLOUDS. HIGHS 22 TO 27. LIGHT WINDS.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS 19 TO 24. LIGHT WINDS.
FRIDAY
DECREASING CLOUDS. HIGHS 22 TO 27. LIGHT WINDS IN THE
MORNING, BECOMING NORTHWEST AROUND 10 MPH IN THE AFTERNOON.
FRIDAY NIGHT THROUGH SATURDAY NIGHT
PARTLY CLOUDY. LOWS 15 TO
22. HIGHS 24 TO 29.
SUNDAY THROUGH TUESDAY
MOSTLY CLOUDY. HIGHS 27 TO 37. LOWS
20 TO 27.
TEMPERATURE
JEROME 27 22 22
TWIN FALLS 27 20 23
=
IDZ029-211700-
OWYHEE MOUNTAINS-
212 AM MST WED JAN 21 2026
TODAY
MOSTLY CLOUDY. PATCHY FOG THIS AFTERNOON. HIGHS 27 TO
37.
TONIGHT
DECREASING CLOUDS. LOWS 20 TO 25.
THURSDAY
PARTLY SUNNY. HIGHS 26 TO 36.
THURSDAY NIGHT
INCREASING CLOUDS. LOWS 19 TO 24.
FRIDAY
PARTLY SUNNY IN THE MORNING, THEN CLEARING. HIGHS 26 TO
34.
FRIDAY NIGHT AND SATURDAY
MOSTLY CLEAR. LOWS 13 TO 21. HIGHS
27 TO 34. BREEZY. WIND CHILLS AS LOW AS ZERO.
SATURDAY NIGHT THROUGH SUNDAY NIGHT
PARTLY CLOUDY. LOWS 17 TO
27. HIGHS 29 TO 39.
MONDAY THROUGH TUESDAY
MOSTLY CLOUDY. HIGHS 32 TO 42. LOWS
24 TO 29.
=
IDZ015-211700-
SOUTHWEST HIGHLANDS-
212 AM MST WED JAN 21 2026
TODAY
DECREASING CLOUDS. PATCHY FOG THIS MORNING. HIGHS 34 TO
44.
TONIGHT
MOSTLY CLOUDY. LOWS 19 TO 24.
THURSDAY
PARTLY SUNNY. HIGHS 31 TO 41.
THURSDAY NIGHT
INCREASING CLOUDS. LOWS 18 TO 23.
FRIDAY
PARTLY SUNNY. HIGHS 29 TO 39.
FRIDAY NIGHT THROUGH SATURDAY NIGHT
PARTLY CLOUDY. LOWS 11 TO
19. HIGHS 29 TO 39. WIND CHILLS AS LOW AS ZERO.
SUNDAY AND SUNDAY NIGHT
PARTLY CLOUDY. HIGHS 34 TO 44. LOWS
19 TO 24.
MONDAY
PARTLY SUNNY. HIGHS 36 TO 46.
MONDAY NIGHT AND TUESDAY
PARTLY CLOUDY. LOWS 21 TO 26. HIGHS
38 TO 48.
=
IDZ030-211700-
SOUTHERN TWIN FALLS COUNTY-
212 AM MST WED JAN 21 2026
TODAY
DECREASING CLOUDS. PATCHY FOG THIS MORNING. HIGHS 29 TO
39.
TONIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING PARTLY
CLOUDY. LOWS 19 TO 24.
THURSDAY
DECREASING CLOUDS. HIGHS 25 TO 35.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS 18 TO 23.
FRIDAY
DECREASING CLOUDS. HIGHS 23 TO 28.
FRIDAY NIGHT THROUGH SATURDAY NIGHT
PARTLY CLOUDY. LOWS 13 TO
20. HIGHS 26 TO 31.
SUNDAY AND SUNDAY NIGHT
PARTLY CLOUDY. HIGHS 30 TO 37. LOWS
19 TO 24.
MONDAY
PARTLY SUNNY. HIGHS 32 TO 39.
MONDAY NIGHT AND TUESDAY
PARTLY CLOUDY. LOWS 22 TO 27. HIGHS
35 TO 42.
=
ORZ062-211700-
BAKER COUNTY-
112 AM PST WED JAN 21 2026
...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
TODAY
MOSTLY SUNNY. HIGHS 25 TO 31. SOUTHEAST WINDS UP TO
10 MPH.
TONIGHT
PARTLY CLOUDY. LOWS 16 TO 23. LIGHT WINDS.
THURSDAY
DECREASING CLOUDS. HIGHS 24 TO 30. LIGHT WINDS.
THURSDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS 17 TO 23. NORTHWEST WINDS UP TO 10 MPH.
FRIDAY
SUNNY. HIGHS 25 TO 34. BRISK. NORTHWEST WINDS 10 TO
20 MPH.
FRIDAY NIGHT
CLEAR. LOWS 11 TO 19.
SATURDAY
SUNNY. HIGHS 27 TO 33.
SATURDAY NIGHT THROUGH SUNDAY NIGHT
PARTLY CLOUDY. LOWS 13 TO
24. HIGHS 25 TO 32.
MONDAY
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF SNOW. HIGHS
25 TO 32.
MONDAY NIGHT AND TUESDAY
MOSTLY CLOUDY. LOWS 20 TO 26. HIGHS
29 TO 36.
TEMPERATURE
BAKER CITY 30 16 28
=
ORZ061-211700-
HARNEY COUNTY-
112 AM PST WED JAN 21 2026
...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
TODAY
DECREASING CLOUDS. PATCHY FOG THIS MORNING. HIGHS 34 TO
42. LIGHT WINDS.
TONIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING PARTLY
CLOUDY. LOWS 12 TO 24. LIGHT WINDS.
THURSDAY
MOSTLY SUNNY. HIGHS 34 TO 42. LIGHT WINDS.
THURSDAY NIGHT
INCREASING CLOUDS. LOWS 15 TO 24. LIGHT WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS 35 TO 42. NORTH WINDS UP TO 10 MPH.
FRIDAY NIGHT THROUGH SUNDAY
MOSTLY CLEAR. LOWS 8 TO 20. HIGHS
36 TO 45.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 16 TO 25.
MONDAY
PARTLY SUNNY. HIGHS 40 TO 47.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 19 TO 27.
TUESDAY
PARTLY SUNNY. HIGHS 42 TO 49.
TEMPERATURE
BURNS 40 12 40
=
ORZ063-211700-
MALHEUR COUNTY-
212 AM MST WED JAN 21 2026 /112 AM PST WED JAN 21 2026/
...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 4 AM PST /5 AM
MST/ FRIDAY...
TODAY
MOSTLY CLOUDY. PATCHY FOG. HIGHS 25 TO 35. LIGHT WINDS.
TONIGHT
MOSTLY CLOUDY. LOWS 16 TO 23. LIGHT WINDS.
THURSDAY
DECREASING CLOUDS. HIGHS 25 TO 32. LIGHT WINDS.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS 16 TO 24. LIGHT WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS 29 TO 35. NORTH WINDS 10 TO 15 MPH.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS 11 TO 21.
SATURDAY THROUGH SUNDAY NIGHT
PARTLY CLOUDY. HIGHS 27 TO 37.
LOWS 12 TO 22.
MONDAY
PARTLY SUNNY. HIGHS 28 TO 38.
MONDAY NIGHT
DECREASING CLOUDS. LOWS 20 TO 26.
TUESDAY
PARTLY SUNNY. HIGHS 31 TO 41.
=
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