733
FPUS55 KBOI 210637
ZFPBOI
ZONE FORECASTS FOR SOUTHWEST IDAHO/SOUTHEAST OREGON
NATIONAL WEATHER SERVICE BOISE ID
1236 AM MDT MON SEP 21 2026
SPOT TEMPERATURES ARE FOR TODAY, TONIGHT, AND TUESDAY.
IDZ011-211400-
WEST CENTRAL MOUNTAINS-
1236 AM MDT MON SEP 21 2026
TODAY
AREAS OF FOG THIS MORNING. SUNNY. HIGHS 68 TO 81.
TONIGHT
INCREASING CLOUDS. LOWS 42 TO 54.
TUESDAY
MOSTLY CLOUDY IN THE MORNING, THEN BECOMING PARTLY
SUNNY. HIGHS 67 TO 80.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 40 TO 51.
WEDNESDAY
SUNNY. HIGHS 66 TO 79.
WEDNESDAY NIGHT THROUGH THURSDAY NIGHT
PARTLY CLOUDY. LOWS
43 TO 56. HIGHS 71 TO 84.
FRIDAY
MOSTLY SUNNY. COOLER WITH HIGHS 61 TO 73.
FRIDAY NIGHT
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS, MAINLY
IN THE EVENING. AREAS OF FOG AFTER MIDNIGHT. CHANCE OF RAIN
30 PERCENT. LOWS 37 TO 47.
SATURDAY AND SATURDAY NIGHT
PARTLY CLOUDY. AREAS OF FOG IN THE
MORNING. AREAS OF FOG AFTER MIDNIGHT. HIGHS 55 TO 69. LOWS 36 TO
46.
SUNDAY
AREAS OF FOG IN THE MORNING. PARTLY SUNNY. HIGHS 55 TO
67.
TEMPERATURE
MCCALL 75 42 74
=
IDZ013-211400-
BOISE MOUNTAINS-
1236 AM MDT MON SEP 21 2026
TODAY
PATCHY FOG THIS MORNING. SUNNY. HIGHS 69 TO 84.
TONIGHT
INCREASING CLOUDS. LOWS 41 TO 56.
TUESDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS WITH A SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. CHANCE OF RAIN
30 PERCENT. HIGHS 66 TO 81.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 38 TO 53.
WEDNESDAY
SUNNY. HIGHS 69 TO 84.
WEDNESDAY NIGHT AND THURSDAY
MOSTLY CLEAR. LOWS 41 TO 56.
HIGHS 74 TO 89.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 42 TO 57. HIGHS
65 TO 80.
FRIDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS IN
THE EVENING. CHANCE OF RAIN 20 PERCENT. LOWS 34 TO 49.
SATURDAY THROUGH SUNDAY
PARTLY CLOUDY. HIGHS 59 TO 74. LOWS
33 TO 48.
TEMPERATURE
IDAHO CITY 83 45 79
=
IDZ028-211400-
CAMAS PRAIRIE-
1236 AM MDT MON SEP 21 2026
TODAY
SUNNY. HIGHS 73 TO 78. EAST WINDS 10 TO 15 MPH.
TONIGHT
MOSTLY CLOUDY. LOWS 42 TO 47. EAST WINDS UP TO 10 MPH.
TUESDAY
DECREASING CLOUDS. HIGHS 71 TO 76. EAST WINDS UP TO
10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 39 TO 44. LIGHT WINDS.
WEDNESDAY
SUNNY. HIGHS 75 TO 80. NORTHEAST WINDS UP TO 10 MPH
IN THE MORNING, SHIFTING TO SOUTHEAST AROUND 10 MPH IN THE
AFTERNOON.
WEDNESDAY NIGHT AND THURSDAY
MOSTLY CLEAR. LOWS 44 TO 49.
HIGHS 78 TO 83. BREEZY.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 46 TO 51. HIGHS
74 TO 79.
FRIDAY NIGHT THROUGH SUNDAY
PARTLY CLOUDY. LOWS 36 TO 43.
HIGHS 68 TO 73.
TEMPERATURE
FAIRFIELD 76 42 73
=
IDZ033-211400-
UPPER WEISER RIVER-
1236 AM MDT MON SEP 21 2026
TODAY
SUNNY. HIGHS 77 TO 84. LIGHT WINDS.
TONIGHT
INCREASING CLOUDS. LOWS 52 TO 57. LIGHT WINDS.
TUESDAY
MOSTLY CLOUDY IN THE MORNING, THEN BECOMING PARTLY
SUNNY. HIGHS 77 TO 83. LIGHT WINDS.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 50 TO 55. LIGHT WINDS.
WEDNESDAY
SUNNY. HIGHS 77 TO 82. LIGHT WINDS IN THE MORNING,
BECOMING SOUTHWEST UP TO 10 MPH IN THE AFTERNOON.
WEDNESDAY NIGHT AND THURSDAY
PARTLY CLOUDY. LOWS 53 TO 58.
HIGHS 83 TO 88.
THURSDAY NIGHT
INCREASING CLOUDS. LOWS 55 TO 60.
FRIDAY
MOSTLY SUNNY. HIGHS 73 TO 78.
FRIDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS IN
THE EVENING, THEN MOSTLY CLOUDY AFTER MIDNIGHT. CHANCE OF RAIN
20 PERCENT. LOWS 46 TO 51.
SATURDAY AND SATURDAY NIGHT
PARTLY CLOUDY. HIGHS 68 TO 75.
LOWS 44 TO 49.
SUNDAY
PARTLY SUNNY. HIGHS 66 TO 73.
TEMPERATURE
COUNCIL 84 54 83
CAMBRIDGE 83 52 83
=
ORZ064-211400-
OREGON LOWER TREASURE VALLEY-
1236 AM MDT MON SEP 21 2026 /1136 PM PDT SUN SEP 20 2026/
TODAY
SUNNY. HIGHS 81 TO 86. EAST WINDS UP TO 10 MPH.
TONIGHT
INCREASING CLOUDS. LOWS 51 TO 57. LIGHT WINDS.
TUESDAY
MOSTLY CLOUDY IN THE MORNING, THEN BECOMING MOSTLY
SUNNY. HIGHS 82 TO 87. LIGHT WINDS.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 50 TO 55. NORTHWEST WINDS UP TO 10 MPH.
WEDNESDAY
SUNNY. HIGHS 80 TO 85. NORTHWEST WINDS UP TO 10 MPH
IN THE MORNING, BECOMING LIGHT IN THE AFTERNOON.
WEDNESDAY NIGHT THROUGH THURSDAY NIGHT
PARTLY CLOUDY. LOWS
52 TO 60. HIGHS 86 TO 91.
FRIDAY AND FRIDAY NIGHT
PARTLY CLOUDY. NOT AS WARM. HIGHS
77 TO 82. LOWS 46 TO 51.
SATURDAY AND SATURDAY NIGHT
PARTLY CLOUDY. HIGHS 71 TO 76.
LOWS 44 TO 50.
SUNDAY
PARTLY SUNNY. HIGHS 70 TO 75.
TEMPERATURE
ONTARIO 85 51 85
=
IDZ012-211400-
LOWER TREASURE VALLEY-
1236 AM MDT MON SEP 21 2026
TODAY
SUNNY. HIGHS 81 TO 86. SOUTHEAST WINDS 10 TO 15 MPH WITH
GUSTS TO 25 MPH.
TONIGHT
INCREASING CLOUDS. LOWS 52 TO 57. LIGHT WINDS.
TUESDAY
PARTLY SUNNY. HIGHS 81 TO 86. LIGHT WINDS.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 50 TO 55. LIGHT WINDS.
WEDNESDAY
SUNNY. HIGHS 80 TO 85. LIGHT WINDS.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 53 TO 58.
THURSDAY
SUNNY. HIGHS 87 TO 92. BREEZY.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. NOT AS WARM. LOWS
54 TO 59. HIGHS 77 TO 82.
FRIDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS IN THE
EVENING. CHANCE OF RAIN 20 PERCENT. LOWS 46 TO 51.
SATURDAY AND SATURDAY NIGHT
PARTLY CLOUDY. HIGHS 71 TO 76.
LOWS 44 TO 49.
SUNDAY
PARTLY SUNNY. HIGHS 70 TO 75.
TEMPERATURE
CALDWELL 84 53 84
=
IDZ014-211400-
UPPER TREASURE VALLEY-
1236 AM MDT MON SEP 21 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 CLOUDY. LOWS 51 TO 59. EAST WINDS UP TO 10 MPH
WITH GUSTS TO 20 MPH.
TUESDAY
PARTLY SUNNY. HIGHS 80 TO 85. LIGHT WINDS.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 49 TO 55. EAST WINDS UP
TO 10 MPH.
WEDNESDAY
SUNNY. HIGHS 83 TO 88. SOUTHEAST WINDS 10 TO 15 MPH.
WEDNESDAY NIGHT AND THURSDAY
MOSTLY CLEAR. LOWS 51 TO 60.
HIGHS 88 TO 93. BREEZY.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 53 TO 60. HIGHS
79 TO 84. WINDY.
FRIDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS IN THE
EVENING. CHANCE OF RAIN 20 PERCENT. LOWS 45 TO 51. BREEZY.
SATURDAY THROUGH SUNDAY
PARTLY CLOUDY. HIGHS 71 TO 79. LOWS
43 TO 50.
TEMPERATURE
BOISE 84 59 83
MOUNTAIN HOME 86 53 83
=
IDZ016-211400-
WESTERN MAGIC VALLEY-
1236 AM MDT MON SEP 21 2026
TODAY
SUNNY. HIGHS 78 TO 83. EAST WINDS 10 TO 15 MPH WITH
GUSTS TO 25 MPH.
TONIGHT
MOSTLY CLOUDY. LOWS 50 TO 55. EAST WINDS 10 TO 15 MPH.
TUESDAY
DECREASING CLOUDS. HIGHS 74 TO 80. SOUTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 47 TO 52. SOUTHEAST WINDS AROUND 10 MPH.
WEDNESDAY
SUNNY. HIGHS 80 TO 85. EAST WINDS UP TO 10 MPH.
WEDNESDAY NIGHT AND THURSDAY
MOSTLY CLEAR. LOWS 52 TO 57.
HIGHS 84 TO 89. BREEZY.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 54 TO 59. HIGHS
78 TO 83. BREEZY.
FRIDAY NIGHT THROUGH SUNDAY
PARTLY CLOUDY. LOWS 44 TO 51.
HIGHS 71 TO 78.
TEMPERATURE
JEROME 78 53 74
TWIN FALLS 79 52 75
=
IDZ029-211400-
OWYHEE MOUNTAINS-
1236 AM MDT MON SEP 21 2026
TODAY
MOSTLY SUNNY. HIGHS 74 TO 81.
TONIGHT
MOSTLY CLOUDY. LOWS 50 TO 59.
TUESDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. CHANCE OF RAIN 20 PERCENT. HIGHS
74 TO 81.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 49 TO 56.
WEDNESDAY
SUNNY. HIGHS 75 TO 83.
WEDNESDAY NIGHT
INCREASING CLOUDS. LOWS 52 TO 60.
THURSDAY
SUNNY. HIGHS 81 TO 87.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. NOT AS WARM. LOWS
52 TO 59. HIGHS 71 TO 76.
FRIDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS IN
THE EVENING. CHANCE OF RAIN 20 PERCENT. LOWS 42 TO 49.
SATURDAY THROUGH SUNDAY
PARTLY CLOUDY. HIGHS 64 TO 73. LOWS
41 TO 48.
=
IDZ015-211400-
SOUTHWEST HIGHLANDS-
1236 AM MDT MON SEP 21 2026
TODAY
MOSTLY SUNNY. HIGHS 77 TO 82.
TONIGHT
MOSTLY CLOUDY. LOWS 49 TO 54.
TUESDAY
MOSTLY CLOUDY IN THE MORNING, THEN PARTLY CLOUDY WITH
A CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. CHANCE OF RAIN 30 PERCENT. HIGHS 73 TO 79.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 46 TO 51.
WEDNESDAY
SUNNY. HIGHS 79 TO 84.
WEDNESDAY NIGHT AND THURSDAY
MOSTLY CLEAR. LOWS 50 TO 56.
HIGHS 82 TO 88. BREEZY.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 51 TO 56. HIGHS
76 TO 81. BREEZY.
FRIDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS IN
THE EVENING. CHANCE OF RAIN 20 PERCENT. LOWS 43 TO 48. BREEZY.
SATURDAY THROUGH SUNDAY
PARTLY CLOUDY. HIGHS 69 TO 76. LOWS
41 TO 46.
=
IDZ030-211400-
SOUTHERN TWIN FALLS COUNTY-
1236 AM MDT MON SEP 21 2026
TODAY
MOSTLY SUNNY. HIGHS 77 TO 82.
TONIGHT
MOSTLY CLOUDY. LOWS 50 TO 55.
TUESDAY
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS WITH A SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. CHANCE OF RAIN
40 PERCENT. HIGHS 73 TO 78.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 46 TO 51.
WEDNESDAY
SUNNY. HIGHS 79 TO 84.
WEDNESDAY NIGHT AND THURSDAY
MOSTLY CLEAR. LOWS 52 TO 57.
HIGHS 82 TO 87. BREEZY.
THURSDAY NIGHT AND FRIDAY
PARTLY CLOUDY. LOWS 54 TO 59. HIGHS
77 TO 82. BREEZY.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS 45 TO 50.
SATURDAY
SUNNY. HIGHS 72 TO 77.
SATURDAY NIGHT AND SUNDAY
PARTLY CLOUDY. LOWS 43 TO 48. HIGHS
71 TO 76.
=
ORZ062-211400-
BAKER COUNTY-
1136 PM PDT SUN SEP 20 2026
TODAY
SUNNY. HIGHS 76 TO 84. SOUTHEAST WINDS UP TO 10 MPH WITH
GUSTS TO 20 MPH.
TONIGHT
PARTLY CLOUDY. LOWS 43 TO 56. LIGHT WINDS.
TUESDAY
PARTLY SUNNY. HIGHS 76 TO 83. LIGHT WINDS.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 37 TO 50. NORTHWEST WINDS UP TO 10 MPH WITH GUSTS TO 20 MPH.
WEDNESDAY
SUNNY. HIGHS 73 TO 81. NORTHWEST WINDS UP TO 10 MPH
IN THE MORNING, BECOMING LIGHT IN THE AFTERNOON.
WEDNESDAY NIGHT AND THURSDAY
PARTLY CLOUDY. LOWS 41 TO 54.
HIGHS 78 TO 87.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS 42 TO 55.
FRIDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS IN THE
AFTERNOON. CHANCE OF RAIN 20 PERCENT. COOLER WITH HIGHS 65 TO 75.
FRIDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS IN
THE EVENING. AREAS OF FOG AFTER MIDNIGHT. CHANCE OF RAIN
20 PERCENT. LOWS 33 TO 46.
SATURDAY
AREAS OF FOG IN THE MORNING. MOSTLY SUNNY. HIGHS
63 TO 71.
SATURDAY NIGHT
INCREASING CLOUDS. PATCHY FOG AFTER MIDNIGHT.
LOWS 33 TO 46.
SUNDAY
AREAS OF FOG IN THE MORNING. PARTLY SUNNY. HIGHS 62 TO
71.
TEMPERATURE
BAKER CITY 82 43 78
=
ORZ061-211400-
HARNEY COUNTY-
1136 PM PDT SUN SEP 20 2026
TODAY
MOSTLY SUNNY. HIGHS 72 TO 80. EAST WINDS UP TO 10 MPH.
TONIGHT
DECREASING CLOUDS. LOWS 42 TO 52. LIGHT WINDS.
TUESDAY
PARTLY SUNNY IN THE MORNING, THEN CLEARING. HIGHS
72 TO 80. WEST WINDS UP TO 10 MPH. GUSTS TO 20 MPH IN THE
AFTERNOON.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 37 TO 48. NORTHWEST WINDS 10 TO 15 MPH.
WEDNESDAY
SUNNY. HIGHS 72 TO 81. LIGHT WINDS.
WEDNESDAY NIGHT AND THURSDAY
PARTLY CLOUDY. LOWS 41 TO 53.
HIGHS 77 TO 86.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS 40 TO 51.
FRIDAY THROUGH SUNDAY
PARTLY CLOUDY. NOT AS WARM. HIGHS 62 TO
72. LOWS 32 TO 44.
TEMPERATURE
BURNS 80 42 79
=
ORZ063-211400-
MALHEUR COUNTY-
1236 AM MDT MON SEP 21 2026 /1136 PM PDT SUN SEP 20 2026/
TODAY
MOSTLY SUNNY. HIGHS 78 TO 83. NORTHEAST WINDS UP TO
10 MPH. GUSTS TO 20 MPH THIS AFTERNOON.
TONIGHT
MOSTLY CLOUDY. LOWS 47 TO 56. NORTH WINDS UP TO
10 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS 79 TO 85. NORTHWEST WINDS UP TO
10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 45 TO 54. NORTHWEST WINDS UP TO 10 MPH.
WEDNESDAY
SUNNY. HIGHS 77 TO 85. NORTHWEST WINDS UP TO 10 MPH
IN THE MORNING, SHIFTING TO EAST WITH GUSTS TO 20 MPH IN THE
AFTERNOON.
WEDNESDAY NIGHT THROUGH THURSDAY NIGHT
PARTLY CLOUDY. LOWS
48 TO 58. HIGHS 83 TO 90. BREEZY.
FRIDAY THROUGH SUNDAY
PARTLY CLOUDY. NOT AS WARM. HIGHS 68 TO
78. LOWS 39 TO 49. BREEZY.
=
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