341  
FPUS55 KBOI 312108  
ZFPBOI  
 
ZONE FORECASTS FOR SOUTHWEST IDAHO/SOUTHEAST OREGON  
NATIONAL WEATHER SERVICE BOISE ID  
207 PM MST SAT JAN 31 2026  
 
SPOT TEMPERATURES ARE FOR TONIGHT, SUNDAY, SUNDAY NIGHT, AND  
MONDAY.  
 
IDZ011-010500-  
WEST CENTRAL MOUNTAINS-  
207 PM MST SAT JAN 31 2026  
   
TONIGHT
 
MOSTLY CLOUDY. LOWS 22 TO 31.    
SUNDAY
 
PARTLY SUNNY. HIGHS 38 TO 45.    
SUNDAY NIGHT
 
PARTLY CLOUDY. PATCHY FOG IN THE EVENING. AREAS  
OF FOG AFTER MIDNIGHT. LOWS 18 TO 29.    
MONDAY
 
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 37 TO 46.    
MONDAY NIGHT
 
PARTLY CLOUDY. PATCHY FOG IN THE EVENING. AREAS  
OF FOG AFTER MIDNIGHT. LOWS 19 TO 29.    
TUESDAY
 
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 41 TO  
48.    
TUESDAY NIGHT
 
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS  
21 TO 31.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS 42 TO 49.    
WEDNESDAY NIGHT THROUGH FRIDAY NIGHT
 
MOSTLY CLEAR. LOWS 21 TO  
32. HIGHS 43 TO 52.    
SATURDAY
 
MOSTLY SUNNY. HIGHS 40 TO 49.  
 

 
TEMPERATURE  
MCCALL 23 41 18 40  
 

 
=  
 
IDZ013-010500-  
BOISE MOUNTAINS-  
207 PM MST SAT JAN 31 2026  
   
TONIGHT
 
MOSTLY CLOUDY. LOWS 20 TO 33.    
SUNDAY
 
PARTLY SUNNY. HIGHS 41 TO 51.    
SUNDAY NIGHT
 
PARTLY CLOUDY. AREAS OF FOG AFTER MIDNIGHT. LOWS  
16 TO 31.    
MONDAY
 
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 38 TO 50.    
MONDAY NIGHT
 
INCREASING CLOUDS. LOWS 16 TO 31.    
TUESDAY THROUGH WEDNESDAY
 
PARTLY CLOUDY. HIGHS 43 TO 53. LOWS  
19 TO 33.    
WEDNESDAY NIGHT THROUGH FRIDAY NIGHT
 
MOSTLY CLEAR. LOWS 19 TO  
34. HIGHS 45 TO 56.    
SATURDAY
 
MOSTLY SUNNY. HIGHS 42 TO 52.  
 

 
TEMPERATURE  
IDAHO CITY 27 51 25 49  
 

 
=  
 
IDZ028-010500-  
CAMAS PRAIRIE-  
207 PM MST SAT JAN 31 2026  
   
TONIGHT
 
MOSTLY CLOUDY. LOWS 21 TO 26. LIGHT WINDS.    
SUNDAY
 
PARTLY SUNNY. HIGHS 46 TO 51. LIGHT WINDS.    
SUNDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS  
21 TO 26. WEST WINDS AROUND 10 MPH.    
MONDAY
 
SUNNY. HIGHS 45 TO 50. NORTHWEST WINDS AROUND 10 MPH.    
MONDAY NIGHT
 
INCREASING CLOUDS. LOWS 22 TO 27. WEST WINDS UP  
TO 10 MPH.    
TUESDAY THROUGH WEDNESDAY
 
PARTLY CLOUDY. HIGHS 46 TO 53. LOWS  
25 TO 30.    
WEDNESDAY NIGHT THROUGH FRIDAY NIGHT
 
MOSTLY CLEAR. LOWS 25 TO  
32. HIGHS 50 TO 57.    
SATURDAY
 
MOSTLY SUNNY. HIGHS 48 TO 53.  
 

 
TEMPERATURE  
FAIRFIELD 22 48 22 48  
 

 
=  
 
IDZ033-010500-  
UPPER WEISER RIVER-  
207 PM MST SAT JAN 31 2026  
 
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST  
/10 AM PST/ FRIDAY...  
   
TONIGHT
 
MOSTLY CLOUDY. LOWS 29 TO 34. LIGHT WINDS.    
SUNDAY
 
DECREASING CLOUDS. HIGHS 43 TO 48. LIGHT WINDS.    
SUNDAY NIGHT
 
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS  
28 TO 33. LIGHT WINDS.    
MONDAY
 
PATCHY FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 45 TO  
50. LIGHT WINDS.    
MONDAY NIGHT
 
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS  
27 TO 32. LIGHT WINDS.    
TUESDAY
 
MOSTLY SUNNY. HIGHS 46 TO 51.    
TUESDAY NIGHT AND WEDNESDAY
 
PARTLY CLOUDY. PATCHY FOG THROUGH  
THE DAY. LOWS 30 TO 35. HIGHS 46 TO 51.    
WEDNESDAY NIGHT AND THURSDAY
 
MOSTLY CLEAR. PATCHY FOG THROUGH  
THE DAY. LOWS 29 TO 34. HIGHS 48 TO 53.    
THURSDAY NIGHT
 
MOSTLY CLEAR. LOWS 30 TO 35.    
FRIDAY
 
MOSTLY SUNNY. HIGHS 47 TO 53.    
FRIDAY NIGHT
 
INCREASING CLOUDS. LOWS 30 TO 35.    
SATURDAY
 
MOSTLY SUNNY. HIGHS 47 TO 52.  
 

 
TEMPERATURE  
COUNCIL 31 47 30 49  
CAMBRIDGE 31 47 29 49  
 

 
=  
 
ORZ064-010500-  
OREGON LOWER TREASURE VALLEY-  
207 PM MST SAT JAN 31 2026 /107 PM PST SAT JAN 31 2026/  
 
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST  
/10 AM PST/ FRIDAY...  
   
TONIGHT
 
MOSTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS 28 TO  
33. LIGHT WINDS.    
SUNDAY
 
DECREASING CLOUDS. PATCHY FOG IN THE MORNING. HIGHS  
45 TO 50. LIGHT WINDS.    
SUNDAY NIGHT
 
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS  
29 TO 34. LIGHT WINDS.    
MONDAY
 
PATCHY FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 49 TO  
54. LIGHT WINDS.    
MONDAY NIGHT
 
DECREASING CLOUDS. PATCHY FOG AFTER MIDNIGHT.  
LOWS 27 TO 32. LIGHT WINDS.    
TUESDAY
 
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 47 TO  
52.    
TUESDAY NIGHT
 
DECREASING CLOUDS. PATCHY FOG AFTER MIDNIGHT.  
LOWS 29 TO 34.    
WEDNESDAY
 
PATCHY FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 47 TO  
52.    
WEDNESDAY NIGHT AND THURSDAY
 
MOSTLY CLEAR. AREAS OF FOG  
THROUGH THE DAY. LOWS 28 TO 33. HIGHS 48 TO 53.    
THURSDAY NIGHT
 
INCREASING CLOUDS. LOWS 29 TO 34.    
FRIDAY
 
PATCHY FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 47 TO  
52.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS 30 TO 35.    
SATURDAY
 
PATCHY FOG IN THE MORNING. PARTLY SUNNY. HIGHS 48 TO  
53.  
 

 
TEMPERATURE  
ONTARIO 29 47 29 51  
 

 
=  
 
IDZ012-010500-  
LOWER TREASURE VALLEY-  
207 PM MST SAT JAN 31 2026  
 
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST  
/10 AM PST/ FRIDAY...  
   
TONIGHT
 
MOSTLY CLOUDY. PATCHY FOG. LOWS 28 TO 33. LIGHT WINDS  
THIS EVENING, BECOMING SOUTHEAST UP TO 10 MPH AFTER MIDNIGHT.    
SUNDAY
 
DECREASING CLOUDS. PATCHY FOG IN THE MORNING. HIGHS  
47 TO 52. SOUTHEAST WINDS UP TO 10 MPH IN THE MORNING, SHIFTING  
TO WEST IN THE AFTERNOON.    
SUNDAY NIGHT
 
PARTLY CLOUDY. AREAS OF FOG AFTER MIDNIGHT. LOWS  
29 TO 34. LIGHT WINDS.    
MONDAY
 
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 49 TO  
54. LIGHT WINDS.    
MONDAY NIGHT
 
PARTLY CLOUDY. AREAS OF FOG AFTER MIDNIGHT. LOWS  
28 TO 33. LIGHT WINDS.    
TUESDAY
 
PATCHY FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 48 TO  
53.    
TUESDAY NIGHT
 
PARTLY CLOUDY. PATCHY FOG IN THE EVENING. AREAS  
OF FOG AFTER MIDNIGHT. LOWS 30 TO 35.    
WEDNESDAY
 
PATCHY FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 48 TO  
53.    
WEDNESDAY NIGHT AND THURSDAY
 
MOSTLY CLEAR. AREAS OF FOG  
THROUGH THE DAY. LOWS 28 TO 34. HIGHS 49 TO 54.    
THURSDAY NIGHT AND FRIDAY
 
PARTLY CLOUDY. AREAS OF FOG THROUGH  
THE DAY. LOWS 30 TO 35. HIGHS 48 TO 53.    
FRIDAY NIGHT
 
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS  
30 TO 35.    
SATURDAY
 
PATCHY FOG IN THE MORNING. PARTLY SUNNY. HIGHS 49 TO  
54.  
 

 
TEMPERATURE  
CALDWELL 29 50 30 52  
 

 
=  
 
IDZ014-010500-  
UPPER TREASURE VALLEY-  
207 PM MST SAT JAN 31 2026  
   
TONIGHT
 
MOSTLY CLOUDY. LOWS 28 TO 33. EAST WINDS 10 TO 15 MPH.   
SUNDAY
 
MOSTLY CLOUDY. HIGHS 50 TO 55. SOUTHEAST WINDS 10 TO  
15 MPH WITH GUSTS TO 25 MPH.    
SUNDAY NIGHT
 
DECREASING CLOUDS. PATCHY FOG AFTER MIDNIGHT.  
LOWS 28 TO 33. LIGHT WINDS.    
MONDAY
 
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 51 TO 56.  
NORTHWEST WINDS UP TO 10 MPH.    
MONDAY NIGHT
 
INCREASING CLOUDS. LOWS 27 TO 32. NORTH WINDS UP  
TO 10 MPH.    
TUESDAY THROUGH WEDNESDAY
 
PATCHY FOG IN THE MORNING. PATCHY  
FOG THROUGH THE DAY. PARTLY CLOUDY. HIGHS 49 TO 56. LOWS 29 TO  
34.    
WEDNESDAY NIGHT AND THURSDAY
 
MOSTLY CLEAR. PATCHY FOG THROUGH  
THE DAY. LOWS 28 TO 33. HIGHS 52 TO 57.    
THURSDAY NIGHT
 
INCREASING CLOUDS. LOWS 29 TO 34.    
FRIDAY AND FRIDAY NIGHT
 
PARTLY CLOUDY. HIGHS 51 TO 56. LOWS  
29 TO 34.    
SATURDAY
 
PATCHY FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 51 TO  
56.  
 

 
TEMPERATURE  
BOISE 31 52 31 52  
MOUNTAIN HOME 29 54 29 54  
 

 
=  
 
IDZ016-010500-  
WESTERN MAGIC VALLEY-  
207 PM MST SAT JAN 31 2026  
   
TONIGHT
 
MOSTLY CLOUDY. LOWS 27 TO 32. BREEZY. EAST WINDS 10 TO  
20 MPH.    
SUNDAY
 
INCREASING CLOUDS. HIGHS 50 TO 55. BREEZY. EAST WINDS  
10 TO 20 MPH.    
SUNDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING  
PARTLY CLOUDY. LOWS 28 TO 33. WEST WINDS AROUND 10 MPH.    
MONDAY
 
SUNNY. HIGHS 49 TO 54. WEST WINDS AROUND 10 MPH.    
MONDAY NIGHT
 
INCREASING CLOUDS. LOWS 27 TO 32. SOUTHWEST WINDS  
AROUND 10 MPH.    
TUESDAY AND TUESDAY NIGHT
 
PARTLY CLOUDY. HIGHS 48 TO 53. LOWS  
27 TO 32.    
WEDNESDAY
 
PATCHY FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 50 TO  
55.    
WEDNESDAY NIGHT THROUGH THURSDAY NIGHT
 
MOSTLY CLEAR. LOWS  
28 TO 34. HIGHS 52 TO 58.    
FRIDAY THROUGH SATURDAY
 
PARTLY CLOUDY. HIGHS 50 TO 56. LOWS  
29 TO 34.  
 

 
TEMPERATURE  
JEROME 30 51 31 50  
TWIN FALLS 27 53 32 51  
 

 
=  
 
IDZ029-010500-  
OWYHEE MOUNTAINS-  
207 PM MST SAT JAN 31 2026  
   
TONIGHT
 
MOSTLY CLOUDY. LOWS 30 TO 35.    
SUNDAY
 
DECREASING CLOUDS. HIGHS 48 TO 56.    
SUNDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS  
29 TO 34.    
MONDAY
 
SUNNY. HIGHS 47 TO 52.    
MONDAY NIGHT
 
DECREASING CLOUDS. LOWS 27 TO 32.    
TUESDAY
 
SUNNY. HIGHS 46 TO 56.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS 28 TO 33.    
WEDNESDAY AND WEDNESDAY NIGHT
 
MOSTLY CLEAR. HIGHS 47 TO 57.  
LOWS 28 TO 33.    
THURSDAY
 
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 47 TO 57.    
THURSDAY NIGHT AND FRIDAY
 
MOSTLY CLEAR. LOWS 28 TO 33. HIGHS  
46 TO 56.    
FRIDAY NIGHT AND SATURDAY
 
PARTLY CLOUDY. LOWS 30 TO 35. HIGHS  
47 TO 55.  
 

 
=  
 
IDZ015-010500-  
SOUTHWEST HIGHLANDS-  
207 PM MST SAT JAN 31 2026  
   
TONIGHT
 
MOSTLY CLOUDY. LOWS 27 TO 32.    
SUNDAY
 
MOSTLY CLOUDY. HIGHS 53 TO 58. BREEZY.   
SUNDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS  
26 TO 31.    
MONDAY
 
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 49 TO 54.    
MONDAY NIGHT
 
MOSTLY CLEAR. LOWS 24 TO 29.    
TUESDAY THROUGH FRIDAY
 
MOSTLY CLEAR. HIGHS 52 TO 62. LOWS  
25 TO 33.    
FRIDAY NIGHT AND SATURDAY
 
PARTLY CLOUDY. LOWS 28 TO 33. HIGHS  
52 TO 57.  
 

 
=  
 
IDZ030-010500-  
SOUTHERN TWIN FALLS COUNTY-  
207 PM MST SAT JAN 31 2026  
   
TONIGHT
 
MOSTLY CLOUDY. LOWS 27 TO 32.    
SUNDAY
 
INCREASING CLOUDS. HIGHS 52 TO 57.    
SUNDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING  
PARTLY CLOUDY. LOWS 29 TO 34.    
MONDAY
 
SUNNY. HIGHS 49 TO 54.    
MONDAY NIGHT
 
MOSTLY CLEAR. LOWS 27 TO 32.    
TUESDAY AND TUESDAY NIGHT
 
MOSTLY CLEAR. HIGHS 50 TO 55. LOWS  
28 TO 33.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS 51 TO 56.    
WEDNESDAY NIGHT THROUGH FRIDAY
 
MOSTLY CLEAR. LOWS 28 TO 35.  
HIGHS 52 TO 59.    
FRIDAY NIGHT AND SATURDAY
 
PARTLY CLOUDY. LOWS 30 TO 35. HIGHS  
52 TO 57.  
 

 
=  
 
ORZ062-010500-  
BAKER COUNTY-  
107 PM PST SAT JAN 31 2026  
   
TONIGHT
 
MOSTLY CLOUDY. LOWS 27 TO 34. SOUTHEAST WINDS 10 TO  
15 MPH.    
SUNDAY
 
DECREASING CLOUDS. HIGHS 45 TO 50. SOUTH WINDS 10 TO  
15 MPH.    
SUNDAY NIGHT
 
PARTLY CLOUDY. AREAS OF FOG AFTER MIDNIGHT. LOWS  
26 TO 32. NORTHWEST WINDS UP TO 10 MPH.    
MONDAY
 
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 47 TO  
52. LIGHT WINDS.    
MONDAY NIGHT
 
DECREASING CLOUDS. AREAS OF FOG AFTER MIDNIGHT.  
LOWS 27 TO 32. SOUTHEAST WINDS UP TO 10 MPH IN THE EVENING,  
BECOMING LIGHT AFTER MIDNIGHT.    
TUESDAY
 
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 47 TO  
52.    
TUESDAY NIGHT
 
DECREASING CLOUDS. LOWS 27 TO 34.    
WEDNESDAY
 
MOSTLY SUNNY. HIGHS 47 TO 52.    
WEDNESDAY NIGHT THROUGH FRIDAY NIGHT
 
MOSTLY CLEAR. LOWS 26 TO  
35. HIGHS 49 TO 54.    
SATURDAY
 
MOSTLY SUNNY. HIGHS 48 TO 53.  
 

 
TEMPERATURE  
BAKER CITY 29 49 26 51  
 

 
=  
 
ORZ061-010500-  
HARNEY COUNTY-  
107 PM PST SAT JAN 31 2026  
   
TONIGHT
 
MOSTLY CLOUDY. LOWS 24 TO 33. EAST WINDS UP TO 10 MPH.   
SUNDAY
 
DECREASING CLOUDS. HIGHS 51 TO 56. SOUTHWEST WINDS  
10 TO 15 MPH WITH GUSTS TO 25 MPH.    
SUNDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.  
AREAS OF FOG AFTER MIDNIGHT. LOWS 22 TO 30. WEST WINDS UP TO  
10 MPH.    
MONDAY
 
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. HIGHS 49 TO  
54. LIGHT WINDS.    
MONDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.  
PATCHY FOG AFTER MIDNIGHT. LOWS 23 TO 29. NORTHEAST WINDS UP TO  
10 MPH.    
TUESDAY
 
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 52 TO 57.    
TUESDAY NIGHT
 
PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT. LOWS  
23 TO 31.    
WEDNESDAY THROUGH THURSDAY
 
PATCHY FOG IN THE MORNING. PATCHY  
FOG THROUGH THE DAY. MOSTLY CLEAR. HIGHS 53 TO 58. LOWS 21 TO 31.   
THURSDAY NIGHT
 
INCREASING CLOUDS. LOWS 22 TO 32.    
FRIDAY
 
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 53 TO 58.    
FRIDAY NIGHT AND SATURDAY
 
PARTLY CLOUDY. LOWS 25 TO 33. HIGHS  
54 TO 59.  
 

 
TEMPERATURE  
BURNS 24 53 22 51  
 

 
=  
 
ORZ063-010500-  
MALHEUR COUNTY-  
207 PM MST SAT JAN 31 2026 /107 PM PST SAT JAN 31 2026/  
   
TONIGHT
 
MOSTLY CLOUDY. LOWS 26 TO 32. EAST WINDS UP TO 10 MPH.   
SUNDAY
 
DECREASING CLOUDS. PATCHY FOG IN THE MORNING. HIGHS  
47 TO 57. SOUTHWEST WINDS 10 TO 15 MPH.    
SUNDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS  
25 TO 32. WEST WINDS UP TO 10 MPH.    
MONDAY
 
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 49 TO 54.  
LIGHT WINDS.    
MONDAY NIGHT
 
PARTLY CLOUDY. LOWS 24 TO 30. LIGHT WINDS.    
TUESDAY THROUGH WEDNESDAY
 
PATCHY FOG IN THE MORNING. PATCHY  
FOG THROUGH THE DAY. PARTLY CLOUDY. HIGHS 47 TO 57. LOWS 23 TO  
32.    
WEDNESDAY NIGHT
 
MOSTLY CLEAR. PATCHY FOG AFTER MIDNIGHT. LOWS  
22 TO 31.    
THURSDAY
 
AREAS OF FOG IN THE MORNING. SUNNY. HIGHS 47 TO 57.    
THURSDAY NIGHT
 
INCREASING CLOUDS. LOWS 24 TO 32.    
FRIDAY
 
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 48 TO 56.    
FRIDAY NIGHT AND SATURDAY
 
PARTLY CLOUDY. LOWS 27 TO 33. HIGHS  
49 TO 57.  
 

 
=  
 
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