264
FPUS55 KBOI 232031
ZFPBOI
ZONE FORECASTS FOR SOUTHWEST IDAHO/SOUTHEAST OREGON
NATIONAL WEATHER SERVICE BOISE ID
230 PM MDT SUN AUG 23 2026
SPOT TEMPERATURES ARE FOR TONIGHT, MONDAY, MONDAY NIGHT, AND
TUESDAY.
IDZ011-240400-
WEST CENTRAL MOUNTAINS-
230 PM MDT SUN AUG 23 2026
TONIGHT
MOSTLY CLEAR. LOWS 44 TO 55.
MONDAY
MOSTLY SUNNY. HIGHS 77 TO 91.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS 50 TO 62.
TUESDAY
SUNNY. HIGHS 78 TO 92.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS 52 TO 63.
WEDNESDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. CHANCE OF RAIN 20 PERCENT. HIGHS
78 TO 91.
WEDNESDAY NIGHT THROUGH THURSDAY NIGHT
PARTLY CLOUDY. LOWS
49 TO 61. HIGHS 75 TO 88.
FRIDAY THROUGH SATURDAY NIGHT
MOSTLY CLEAR. HIGHS 71 TO 86.
LOWS 44 TO 55.
SUNDAY
PATCHY FOG IN THE MORNING. SUNNY. HIGHS 70 TO 83.
TEMPERATURE
MCCALL 42 85 50 86
=
IDZ013-240400-
BOISE MOUNTAINS-
230 PM MDT SUN AUG 23 2026
TONIGHT
PARTLY CLOUDY. LOWS 44 TO 59.
MONDAY
MOSTLY SUNNY. PATCHY SMOKE IN THE AFTERNOON. HIGHS
79 TO 94.
MONDAY NIGHT
DECREASING CLOUDS. PATCHY SMOKE IN THE EVENING.
LOWS 48 TO 63.
TUESDAY
SUNNY. HIGHS 80 TO 95.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 49 TO 64.
WEDNESDAY THROUGH FRIDAY
PARTLY CLOUDY. HIGHS 78 TO 93. LOWS
46 TO 61.
FRIDAY NIGHT THROUGH SUNDAY
MOSTLY CLEAR. LOWS 42 TO 57. HIGHS
73 TO 87.
TEMPERATURE
IDAHO CITY 44 93 51 94
=
IDZ028-240400-
CAMAS PRAIRIE-
230 PM MDT SUN AUG 23 2026
TONIGHT
PARTLY CLOUDY. LOWS 43 TO 52. WEST WINDS 10 TO 15 MPH
WITH GUSTS TO 30 MPH THIS EVENING, BECOMING LIGHT AFTER MIDNIGHT.
MONDAY
MOSTLY SUNNY. HIGHS 85 TO 90. LIGHT WINDS IN THE
MORNING, BECOMING SOUTHEAST AROUND 10 MPH WITH GUSTS TO 20 MPH IN
THE AFTERNOON.
MONDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN CLEARING. LOWS
50 TO 55. SOUTHEAST WINDS 10 TO 15 MPH IN THE EVENING, BECOMING
LIGHT AFTER MIDNIGHT.
TUESDAY
SUNNY. HIGHS 86 TO 91. SOUTHEAST WINDS UP TO 10 MPH.
GUSTS TO 20 MPH IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS 51 TO 57. SOUTHWEST WINDS
10 TO 15 MPH IN THE EVENING, BECOMING LIGHT AFTER MIDNIGHT.
WEDNESDAY THROUGH FRIDAY NIGHT
PARTLY CLOUDY. HIGHS 82 TO 92.
LOWS 46 TO 56.
SATURDAY THROUGH SUNDAY
MOSTLY CLEAR. HIGHS 78 TO 85. LOWS
42 TO 49. BREEZY.
TEMPERATURE
FAIRFIELD 44 88 50 89
=
IDZ033-240400-
UPPER WEISER RIVER-
230 PM MDT SUN AUG 23 2026
TONIGHT
MOSTLY CLEAR. LOWS 56 TO 62. SOUTHWEST WINDS UP TO
10 MPH THIS EVENING, SHIFTING TO NORTH AFTER MIDNIGHT. GUSTS TO
20 MPH.
MONDAY
MOSTLY SUNNY. HIGHS 88 TO 95. NORTHEAST WINDS UP TO
10 MPH WITH GUSTS TO 20 MPH IN THE MORNING, BECOMING LIGHT IN THE
AFTERNOON.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS 61 TO 66. SOUTHEAST WINDS UP
TO 10 MPH.
TUESDAY
SUNNY. HIGHS 90 TO 96. NORTH WINDS UP TO 10 MPH IN THE
MORNING, SHIFTING TO SOUTH AROUND 10 MPH IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS 62 TO 68. SOUTHEAST WINDS UP
TO 10 MPH.
WEDNESDAY THROUGH THURSDAY NIGHT
PARTLY CLOUDY. HIGHS 86 TO
96. LOWS 58 TO 66.
FRIDAY THROUGH SUNDAY
MOSTLY CLEAR. HIGHS 81 TO 91. LOWS 53 TO
62.
TEMPERATURE
COUNCIL 59 94 64 95
CAMBRIDGE 56 94 61 95
=
ORZ064-240400-
OREGON LOWER TREASURE VALLEY-
230 PM MDT SUN AUG 23 2026 /130 PM PDT SUN AUG 23 2026/
TONIGHT
INCREASING CLOUDS. LOWS 58 TO 64. NORTHWEST WINDS
10 TO 15 MPH WITH GUSTS TO 25 MPH.
MONDAY
MOSTLY SUNNY. HIGHS 90 TO 95. NORTHWEST WINDS UP TO
10 MPH IN THE MORNING, BECOMING LIGHT IN THE AFTERNOON.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS 60 TO 67. LIGHT WINDS.
TUESDAY
SUNNY. HIGHS 93 TO 98. LIGHT WINDS.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS 62 TO 69. LIGHT WINDS.
WEDNESDAY THROUGH THURSDAY NIGHT
PARTLY CLOUDY. HIGHS 91 TO
99. LOWS 59 TO 68.
FRIDAY THROUGH SUNDAY
MOSTLY CLEAR. HIGHS 85 TO 94. LOWS 55 TO
63.
TEMPERATURE
ONTARIO 58 93 60 96
=
IDZ012-240400-
LOWER TREASURE VALLEY-
230 PM MDT SUN AUG 23 2026
TONIGHT
INCREASING CLOUDS. LOWS 55 TO 62. NORTHWEST WINDS UP
TO 10 MPH.
MONDAY
MOSTLY SUNNY. HIGHS 90 TO 95. LIGHT WINDS IN THE
MORNING, BECOMING EAST UP TO 10 MPH IN THE AFTERNOON.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS 60 TO 65. SOUTHEAST WINDS UP
TO 10 MPH.
TUESDAY
SUNNY. HIGHS 93 TO 98. SOUTHEAST WINDS UP TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS 61 TO 67. SOUTHEAST WINDS UP
TO 10 MPH.
WEDNESDAY THROUGH THURSDAY NIGHT
PARTLY CLOUDY. HIGHS 90 TO
98. LOWS 59 TO 67.
FRIDAY THROUGH SUNDAY
MOSTLY CLEAR. HIGHS 84 TO 93. LOWS 54 TO
62.
TEMPERATURE
CALDWELL 55 93 60 96
=
IDZ014-240400-
UPPER TREASURE VALLEY-
230 PM MDT SUN AUG 23 2026
TONIGHT
PARTLY CLOUDY. LOWS 54 TO 60. NORTHWEST WINDS 10 TO
15 MPH.
MONDAY
MOSTLY SUNNY. HIGHS 91 TO 96. EAST WINDS UP TO 10 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 59 TO 66. SOUTHEAST WINDS
AROUND 10 MPH WITH GUSTS TO 20 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS 94 TO 99. SOUTHEAST WINDS 10 TO
15 MPH.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 60 TO 67. SOUTHEAST
WINDS UP TO 10 MPH.
WEDNESDAY THROUGH THURSDAY NIGHT
PARTLY CLOUDY. HIGHS 91 TO
99. LOWS 58 TO 67.
FRIDAY AND FRIDAY NIGHT
PARTLY CLOUDY. HIGHS 88 TO 93. LOWS
56 TO 61.
SATURDAY THROUGH SUNDAY
MOSTLY CLEAR. HIGHS 84 TO 91. LOWS
53 TO 59.
TEMPERATURE
BOISE 60 93 66 95
MOUNTAIN HOME 55 95 61 97
=
IDZ016-240400-
WESTERN MAGIC VALLEY-
230 PM MDT SUN AUG 23 2026
TONIGHT
PARTLY CLOUDY. LOWS 56 TO 62. SOUTH WINDS UP TO 10 MPH
WITH GUSTS TO 20 MPH.
MONDAY
PARTLY CLOUDY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS. THUNDERSTORMS MAY PRODUCE GUSTY WINDS IN THE
AFTERNOON. CHANCE OF RAIN 30 PERCENT. HIGHS 87 TO 92. EAST WINDS
10 TO 15 MPH.
MONDAY NIGHT
DECREASING CLOUDS. LOWS 58 TO 63. SOUTHEAST WINDS
10 TO 15 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS 89 TO 94. EAST WINDS 10 TO 15 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS 60 TO 65. SOUTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. CHANCE OF RAIN 20 PERCENT. HIGHS
90 TO 95.
WEDNESDAY NIGHT THROUGH THURSDAY NIGHT
PARTLY CLOUDY. LOWS
58 TO 65. HIGHS 88 TO 93.
FRIDAY
PARTLY SUNNY. HIGHS 84 TO 89.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS 55 TO 60.
SATURDAY
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF SHOWERS.
HIGHS 82 TO 87.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS 53 TO 58.
SUNDAY
MOSTLY SUNNY. HIGHS 80 TO 85.
TEMPERATURE
JEROME 61 87 60 89
TWIN FALLS 62 88 60 90
=
IDZ029-240400-
OWYHEE MOUNTAINS-
230 PM MDT SUN AUG 23 2026
TONIGHT
PARTLY CLOUDY. LOWS 54 TO 63.
MONDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. THUNDERSTORMS MAY PRODUCE GUSTY
WINDS IN THE AFTERNOON. CHANCE OF RAIN 20 PERCENT. HIGHS 83 TO
91.
MONDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING. THUNDERSTORMS MAY PRODUCE GUSTY
WINDS IN THE EVENING. CHANCE OF RAIN 20 PERCENT. LOWS 57 TO 65.
TUESDAY
MOSTLY SUNNY. HIGHS 86 TO 92.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 59 TO 68.
WEDNESDAY THROUGH FRIDAY NIGHT
PARTLY CLOUDY. HIGHS 82 TO 92.
LOWS 55 TO 65.
SATURDAY THROUGH SUNDAY
MOSTLY CLEAR. HIGHS 77 TO 86. LOWS
50 TO 58.
=
IDZ015-240400-
SOUTHWEST HIGHLANDS-
230 PM MDT SUN AUG 23 2026
TONIGHT
INCREASING CLOUDS. LOWS 57 TO 62.
MONDAY
PARTLY CLOUDY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS. THUNDERSTORMS MAY PRODUCE GUSTY WINDS IN THE
AFTERNOON. CHANCE OF RAIN 30 PERCENT. HIGHS 85 TO 91.
MONDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING. THUNDERSTORMS MAY PRODUCE GUSTY
WINDS IN THE EVENING. CHANCE OF RAIN 30 PERCENT. LOWS 57 TO 62.
TUESDAY
MOSTLY SUNNY. HIGHS 87 TO 93.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 58 TO 65.
WEDNESDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 89 TO 95.
WEDNESDAY NIGHT THROUGH FRIDAY NIGHT
PARTLY CLOUDY. LOWS 53 TO
63. HIGHS 84 TO 92. BREEZY.
SATURDAY AND SATURDAY NIGHT
MOSTLY CLEAR. HIGHS 83 TO 88. LOWS
51 TO 56. BREEZY.
SUNDAY
MOSTLY SUNNY. HIGHS 81 TO 86.
=
IDZ030-240400-
SOUTHERN TWIN FALLS COUNTY-
230 PM MDT SUN AUG 23 2026
TONIGHT
INCREASING CLOUDS. LOWS 57 TO 63.
MONDAY
SHOWERS LIKELY. A CHANCE OF THUNDERSTORMS.
THUNDERSTORMS MAY PRODUCE GUSTY WINDS IN THE AFTERNOON. CHANCE OF
RAIN 60 PERCENT. HIGHS 86 TO 91.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
THUNDERSTORMS MAY PRODUCE GUSTY WINDS IN THE EVENING. CHANCE OF
RAIN 30 PERCENT. LOWS 58 TO 63.
TUESDAY
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS. A
SLIGHT CHANCE OF THUNDERSTORMS. THUNDERSTORMS MAY PRODUCE GUSTY
WINDS IN THE AFTERNOON. CHANCE OF RAIN 20 PERCENT. HIGHS 88 TO
93.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 60 TO 65.
WEDNESDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS WITH A SLIGHT
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. CHANCE OF RAIN
30 PERCENT. HIGHS 88 TO 93.
WEDNESDAY NIGHT THROUGH THURSDAY NIGHT
PARTLY CLOUDY. LOWS
59 TO 66. HIGHS 87 TO 92.
FRIDAY
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF SHOWERS.
HIGHS 84 TO 89.
FRIDAY NIGHT AND SATURDAY
PARTLY CLOUDY. A 20 PERCENT CHANCE
OF SHOWERS. LOWS 56 TO 61. HIGHS 83 TO 88.
SATURDAY NIGHT
INCREASING CLOUDS. LOWS 53 TO 58.
SUNDAY
MOSTLY SUNNY. HIGHS 81 TO 86.
=
ORZ062-240400-
BAKER COUNTY-
130 PM PDT SUN AUG 23 2026
TONIGHT
MOSTLY CLEAR. PATCHY SMOKE AFTER MIDNIGHT. LOWS 41 TO
56. NORTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH.
MONDAY
MOSTLY SUNNY. PATCHY SMOKE. HIGHS 86 TO 94. WEST WINDS
UP TO 10 MPH IN THE MORNING, SHIFTING TO EAST IN THE AFTERNOON.
MONDAY NIGHT
DECREASING CLOUDS. LOWS 50 TO 63. SOUTHEAST WINDS
UP TO 10 MPH.
TUESDAY
SUNNY. HIGHS 88 TO 96. SOUTHEAST WINDS UP TO 10 MPH.
GUSTS TO 20 MPH IN THE AFTERNOON.
TUESDAY NIGHT
DECREASING CLOUDS. PATCHY SMOKE AFTER MIDNIGHT.
LOWS 52 TO 65. SOUTH WINDS UP TO 10 MPH. GUSTS TO 25 MPH IN THE
EVENING.
WEDNESDAY AND WEDNESDAY NIGHT
PARTLY CLOUDY. HIGHS 88 TO 97.
LOWS 47 TO 61.
THURSDAY
SUNNY. HIGHS 84 TO 92.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN CLEARING.
LOWS 43 TO 57.
FRIDAY THROUGH SUNDAY
MOSTLY CLEAR. HIGHS 80 TO 90. LOWS 38 TO
53.
TEMPERATURE
BAKER CITY 41 90 50 94
=
ORZ061-240400-
HARNEY COUNTY-
130 PM PDT SUN AUG 23 2026
TONIGHT
PARTLY CLOUDY. LOWS 46 TO 55. NORTH WINDS 10 TO
15 MPH.
MONDAY
PARTLY CLOUDY. A CHANCE OF RAIN SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. THUNDERSTORMS MAY PRODUCE GUSTY
WINDS IN THE AFTERNOON. CHANCE OF RAIN 30 PERCENT. HIGHS 81 TO
91. SOUTHEAST WINDS 10 TO 15 MPH. GUSTS TO 25 MPH IN THE
AFTERNOON.
MONDAY NIGHT
PATCHY SMOKE IN THE EVENING. MOSTLY CLOUDY WITH A
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE EVENING, THEN PARTLY
CLOUDY AFTER MIDNIGHT. THUNDERSTORMS MAY PRODUCE GUSTY WINDS IN
THE EVENING. CHANCE OF RAIN 30 PERCENT. LOWS 49 TO 59. SOUTH
WINDS 10 TO 15 MPH. GUSTS TO 25 MPH IN THE EVENING.
TUESDAY
MOSTLY SUNNY. HIGHS 83 TO 92. SOUTH WINDS 10 TO
15 MPH. GUSTS TO 30 MPH IN THE AFTERNOON.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS 49 TO 59. SOUTHWEST WINDS
10 TO 15 MPH. GUSTS TO 30 MPH IN THE EVENING.
WEDNESDAY THROUGH FRIDAY
PARTLY CLOUDY. HIGHS 81 TO 91. LOWS
45 TO 58.
FRIDAY NIGHT THROUGH SUNDAY
MOSTLY CLEAR. LOWS 40 TO 53. HIGHS
76 TO 86.
TEMPERATURE
BURNS 47 90 49 92
=
ORZ063-240400-
MALHEUR COUNTY-
230 PM MDT SUN AUG 23 2026 /130 PM PDT SUN AUG 23 2026/
TONIGHT
PARTLY CLOUDY. LOWS 51 TO 61. NORTH WINDS 10 TO 15 MPH
WITH GUSTS TO 25 MPH.
MONDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS IN
THE AFTERNOON. THUNDERSTORMS MAY PRODUCE GUSTY WINDS IN THE
AFTERNOON. CHANCE OF RAIN 30 PERCENT. HIGHS 88 TO 94. EAST WINDS
UP TO 10 MPH WITH GUSTS TO 20 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
THUNDERSTORMS MAY PRODUCE GUSTY WINDS IN THE EVENING. CHANCE OF
RAIN 30 PERCENT. LOWS 55 TO 64. SOUTHEAST WINDS 10 TO 15 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS 90 TO 96. SOUTH WINDS 10 TO
15 MPH. GUSTS TO 25 MPH IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS 57 TO 66. SOUTH WINDS 10 TO
15 MPH. GUSTS TO 25 MPH IN THE EVENING.
WEDNESDAY THROUGH FRIDAY
PARTLY CLOUDY. HIGHS 86 TO 96. LOWS
53 TO 63.
FRIDAY NIGHT THROUGH SUNDAY
MOSTLY CLEAR. LOWS 48 TO 58. HIGHS
83 TO 90.
=
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