231
FPUS55 KBOI 230831
ZFPBOI
ZONE FORECASTS FOR SOUTHWEST IDAHO/SOUTHEAST OREGON
NATIONAL WEATHER SERVICE BOISE ID
230 AM MDT SUN AUG 23 2026
SPOT TEMPERATURES ARE FOR TODAY, TONIGHT, AND MONDAY.
IDZ011-231600-
WEST CENTRAL MOUNTAINS-
230 AM MDT SUN AUG 23 2026
TODAY
AREAS OF FOG THIS MORNING. SUNNY. HIGHS 71 TO 85.
TONIGHT
MOSTLY CLEAR. LOWS 44 TO 56.
MONDAY
MOSTLY SUNNY. HIGHS 77 TO 90.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 50 TO 61.
TUESDAY
SUNNY. HIGHS 78 TO 91.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS 52 TO 62.
WEDNESDAY THROUGH THURSDAY NIGHT
PARTLY CLOUDY. HIGHS 75 TO
90. LOWS 49 TO 60.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 72 TO 86. LOWS
47 TO 57.
TEMPERATURE
MCCALL 79 44 84
=
IDZ013-231600-
BOISE MOUNTAINS-
230 AM MDT SUN AUG 23 2026
TODAY
AREAS OF FOG THIS MORNING. SUNNY. HIGHS 74 TO 89.
TONIGHT
INCREASING CLOUDS. PATCHY SMOKE IN THE EVENING. LOWS
42 TO 57.
MONDAY
MOSTLY SUNNY. HIGHS 79 TO 94.
MONDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF RAIN SHOWERS
AND THUNDERSTORMS IN THE EVENING. CHANCE OF RAIN 20 PERCENT. LOWS
45 TO 60.
TUESDAY
SUNNY. HIGHS 80 TO 95.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 47 TO 62.
WEDNESDAY THROUGH FRIDAY
PARTLY CLOUDY. HIGHS 78 TO 93. LOWS
45 TO 60.
FRIDAY NIGHT AND SATURDAY
MOSTLY CLEAR. LOWS 43 TO 58. HIGHS
75 TO 89.
TEMPERATURE
IDAHO CITY 87 46 92
=
IDZ028-231600-
CAMAS PRAIRIE-
230 AM MDT SUN AUG 23 2026
TODAY
AREAS OF FOG THIS MORNING. SUNNY. HIGHS 82 TO 87.
BREEZY. NORTHWEST WINDS UP TO 10 MPH THIS MORNING, INCREASING TO
WEST 10 TO 20 MPH WITH GUSTS TO 30 MPH THIS AFTERNOON.
TONIGHT
MOSTLY CLEAR. PATCHY SMOKE AFTER MIDNIGHT. LOWS 46 TO
52. BREEZY. NORTHWEST WINDS 10 TO 20 MPH. GUSTS TO 30 MPH IN THE
EVENING.
MONDAY
PARTLY SUNNY. HIGHS 85 TO 90. NORTHEAST WINDS AROUND
10 MPH IN THE MORNING, SHIFTING TO SOUTH IN THE AFTERNOON.
MONDAY NIGHT
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT.
CHANCE OF RAIN 20 PERCENT. LOWS 49 TO 54. SOUTHEAST WINDS 10 TO
15 MPH IN THE EVENING, BECOMING LIGHT AFTER MIDNIGHT.
TUESDAY
SUNNY. HIGHS 86 TO 91. NORTHEAST WINDS AROUND 10 MPH
IN THE MORNING, SHIFTING TO SOUTH IN THE AFTERNOON. GUSTS TO
20 MPH.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 51 TO 56.
WEDNESDAY THROUGH SATURDAY
PARTLY CLOUDY. HIGHS 81 TO 91. LOWS
46 TO 56.
TEMPERATURE
FAIRFIELD 85 46 87
=
IDZ033-231600-
UPPER WEISER RIVER-
230 AM MDT SUN AUG 23 2026
TODAY
SUNNY. HIGHS 84 TO 90. WEST WINDS 10 TO 15 MPH.
TONIGHT
INCREASING CLOUDS. LOWS 54 TO 61. NORTH WINDS 10 TO
15 MPH WITH GUSTS TO 25 MPH.
MONDAY
MOSTLY SUNNY. HIGHS 88 TO 94. NORTHEAST WINDS 10 TO
15 MPH IN THE MORNING, SHIFTING TO SOUTHWEST IN THE AFTERNOON.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 60 TO 66. SOUTH WINDS AROUND
10 MPH IN THE EVENING, SHIFTING TO NORTHEAST AFTER MIDNIGHT.
TUESDAY
SUNNY. HIGHS 90 TO 96. NORTHEAST WINDS UP TO 10 MPH IN
THE MORNING, SHIFTING TO SOUTHWEST AROUND 10 MPH IN THE
AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS 62 TO 67.
WEDNESDAY THROUGH THURSDAY NIGHT
PARTLY CLOUDY. HIGHS 86 TO
95. LOWS 57 TO 66.
FRIDAY
SUNNY. HIGHS 85 TO 91.
FRIDAY NIGHT
INCREASING CLOUDS. LOWS 57 TO 63.
SATURDAY
SUNNY. HIGHS 84 TO 90.
TEMPERATURE
COUNCIL 89 59 94
CAMBRIDGE 90 54 94
=
ORZ064-231600-
OREGON LOWER TREASURE VALLEY-
230 AM MDT SUN AUG 23 2026 /130 AM PDT SUN AUG 23 2026/
TODAY
SUNNY. HIGHS 89 TO 94. WEST WINDS 10 TO 15 MPH WITH
GUSTS TO 25 MPH.
TONIGHT
PARTLY CLOUDY. LOWS 57 TO 64. NORTHWEST WINDS 10 TO
15 MPH WITH GUSTS TO 25 MPH.
MONDAY
PARTLY SUNNY. HIGHS 90 TO 95. NORTHWEST WINDS AROUND
10 MPH IN THE MORNING, BECOMING LIGHT IN THE AFTERNOON.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 60 TO 67. EAST WINDS AROUND
10 MPH IN THE EVENING, SHIFTING TO NORTHWEST UP TO 10 MPH AFTER
MIDNIGHT.
TUESDAY
SUNNY. HIGHS 93 TO 98. LIGHT WINDS IN THE MORNING,
BECOMING SOUTHEAST UP TO 10 MPH IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS 63 TO 69.
WEDNESDAY THROUGH THURSDAY NIGHT
PARTLY CLOUDY. HIGHS 91 TO
98. LOWS 58 TO 67.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 89 TO 95. LOWS
58 TO 64.
TEMPERATURE
ONTARIO 91 57 92
=
IDZ012-231600-
LOWER TREASURE VALLEY-
230 AM MDT SUN AUG 23 2026
TODAY
SUNNY. HIGHS 88 TO 93. NORTHWEST WINDS 10 TO 15 MPH.
TONIGHT
PARTLY CLOUDY. LOWS 56 TO 61. NORTHWEST WINDS 10 TO
15 MPH.
MONDAY
MOSTLY SUNNY. HIGHS 90 TO 95. NORTHWEST WINDS UP TO
10 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 59 TO 64. EAST WINDS AROUND
10 MPH.
TUESDAY
SUNNY. HIGHS 93 TO 98. SOUTHEAST WINDS UP TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS 62 TO 67.
WEDNESDAY THROUGH THURSDAY NIGHT
PARTLY CLOUDY. HIGHS 89 TO
97. LOWS 57 TO 65.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 87 TO 93. LOWS
57 TO 62.
TEMPERATURE
CALDWELL 91 56 93
=
IDZ014-231600-
UPPER TREASURE VALLEY-
230 AM MDT SUN AUG 23 2026
TODAY
SUNNY. HIGHS 88 TO 93. NORTHWEST WINDS 10 TO 15 MPH WITH
GUSTS TO 25 MPH.
TONIGHT
INCREASING CLOUDS. LOWS 56 TO 61. NORTHWEST WINDS
10 TO 15 MPH. GUSTS TO 25 MPH IN THE EVENING.
MONDAY
PARTLY SUNNY. HIGHS 91 TO 96. SOUTHEAST WINDS AROUND
10 MPH WITH GUSTS TO 20 MPH.
MONDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING. CHANCE OF RAIN 20 PERCENT. LOWS
58 TO 65. SOUTHEAST WINDS 10 TO 15 MPH.
TUESDAY
SUNNY. HIGHS 93 TO 98. SOUTHEAST WINDS AROUND 10 MPH
WITH GUSTS TO 20 MPH.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 60 TO 67.
WEDNESDAY THROUGH FRIDAY
PARTLY CLOUDY. HIGHS 89 TO 99. LOWS
57 TO 65.
FRIDAY NIGHT
DECREASING CLOUDS. LOWS 56 TO 62.
SATURDAY
MOSTLY SUNNY. HIGHS 87 TO 92.
TEMPERATURE
BOISE 89 61 93
MOUNTAIN HOME 92 57 95
=
IDZ016-231600-
WESTERN MAGIC VALLEY-
230 AM MDT SUN AUG 23 2026
TODAY
SUNNY. HIGHS 86 TO 91. WEST WINDS 10 TO 15 MPH WITH
GUSTS TO 25 MPH.
TONIGHT
PARTLY CLOUDY. LOWS 57 TO 62. WEST WINDS 10 TO 15 MPH
IN THE EVENING, SHIFTING TO SOUTH AFTER MIDNIGHT.
MONDAY
PARTLY CLOUDY. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE
OF THUNDERSTORMS IN THE AFTERNOON. THUNDERSTORMS MAY PRODUCE
GUSTY WINDS IN THE AFTERNOON. CHANCE OF RAIN 30 PERCENT. HIGHS
87 TO 92. EAST WINDS AROUND 10 MPH WITH GUSTS TO 20 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. CHANCE OF RAIN 30 PERCENT. LOWS 57 TO 62.
SOUTHEAST WINDS 10 TO 15 MPH.
TUESDAY
SUNNY. HIGHS 89 TO 94. EAST WINDS AROUND 10 MPH.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 59 TO 64.
WEDNESDAY THROUGH SATURDAY
PARTLY CLOUDY. HIGHS 84 TO 94. LOWS
56 TO 64.
TEMPERATURE
JEROME 86 59 88
TWIN FALLS 87 61 88
=
IDZ029-231600-
OWYHEE MOUNTAINS-
230 AM MDT SUN AUG 23 2026
TODAY
SUNNY. HIGHS 81 TO 87.
TONIGHT
PARTLY CLOUDY. LOWS 54 TO 62.
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. LOWS 56 TO 64.
TUESDAY
SUNNY. HIGHS 86 TO 92.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 58 TO 67.
WEDNESDAY THROUGH FRIDAY
PARTLY CLOUDY. HIGHS 82 TO 92. LOWS
55 TO 65.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS 54 TO 62.
SATURDAY
MOSTLY SUNNY. HIGHS 80 TO 87.
=
IDZ015-231600-
SOUTHWEST HIGHLANDS-
230 AM MDT SUN AUG 23 2026
TODAY
SUNNY. HIGHS 85 TO 90.
TONIGHT
INCREASING CLOUDS. LOWS 56 TO 61.
MONDAY
MOSTLY CLOUDY IN THE MORNING, THEN PARTLY CLOUDY WITH A
CHANCE OF SHOWERS WITH A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. THUNDERSTORMS MAY PRODUCE GUSTY WINDS IN THE
AFTERNOON. CHANCE OF RAIN 30 PERCENT. HIGHS 86 TO 91.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. CHANCE OF RAIN 30 PERCENT. LOWS 55 TO 60. BREEZY.
TUESDAY
MOSTLY SUNNY. HIGHS 87 TO 93.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLOUDY. LOWS 57 TO 62.
HIGHS 88 TO 94.
WEDNESDAY NIGHT THROUGH FRIDAY
PARTLY CLOUDY. LOWS 54 TO 63.
HIGHS 85 TO 92. BREEZY.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS 54 TO 60. BREEZY.
SATURDAY
MOSTLY SUNNY. HIGHS 84 TO 89.
=
IDZ030-231600-
SOUTHERN TWIN FALLS COUNTY-
230 AM MDT SUN AUG 23 2026
TODAY
PARTLY CLOUDY. A CHANCE OF SHOWERS WITH A SLIGHT CHANCE
OF THUNDERSTORMS THIS AFTERNOON. THUNDERSTORMS MAY PRODUCE GUSTY
WINDS THIS AFTERNOON. CHANCE OF RAIN 30 PERCENT. HIGHS 84 TO 89.
TONIGHT
INCREASING CLOUDS. LOWS 58 TO 63.
MONDAY
SHOWERS LIKELY WITH A SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. THUNDERSTORMS MAY PRODUCE GUSTY WINDS IN THE
AFTERNOON. CHANCE OF RAIN 60 PERCENT. HIGHS 85 TO 90.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN PARTLY CLOUDY
AFTER MIDNIGHT. CHANCE OF RAIN 30 PERCENT. LOWS 57 TO 62.
TUESDAY
SUNNY. HIGHS 87 TO 92.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLOUDY. LOWS 59 TO 64.
HIGHS 88 TO 93.
WEDNESDAY NIGHT THROUGH THURSDAY NIGHT
PARTLY CLOUDY. LOWS
58 TO 65. HIGHS 87 TO 92.
FRIDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS IN THE
AFTERNOON. CHANCE OF RAIN 20 PERCENT. HIGHS 85 TO 90.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS 57 TO 62.
SATURDAY
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS IN THE
AFTERNOON. CHANCE OF RAIN 20 PERCENT. HIGHS 83 TO 88.
=
ORZ062-231600-
BAKER COUNTY-
130 AM PDT SUN AUG 23 2026
TODAY
AREAS OF FOG THIS MORNING. SUNNY. HIGHS 81 TO 90.
NORTHWEST WINDS 10 TO 15 MPH.
TONIGHT
MOSTLY CLEAR. LOWS 41 TO 56. NORTHWEST WINDS 10 TO
15 MPH WITH GUSTS TO 25 MPH.
MONDAY
PARTLY SUNNY. HIGHS 86 TO 94. NORTH WINDS UP TO 10 MPH
IN THE MORNING, SHIFTING TO SOUTHEAST IN THE AFTERNOON.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 48 TO 62. SOUTHEAST WINDS
10 TO 15 MPH IN THE EVENING, SHIFTING TO NORTH AFTER MIDNIGHT.
TUESDAY
SUNNY. HIGHS 88 TO 96. NORTHEAST WINDS UP TO 10 MPH IN
THE MORNING, SHIFTING TO SOUTH WITH GUSTS TO 25 MPH IN THE
AFTERNOON.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 51 TO 64.
WEDNESDAY THROUGH THURSDAY NIGHT
PARTLY CLOUDY. HIGHS 85 TO
95. LOWS 42 TO 57.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 81 TO 91. LOWS
42 TO 57.
TEMPERATURE
BAKER CITY 84 41 90
=
ORZ061-231600-
HARNEY COUNTY-
130 AM PDT SUN AUG 23 2026
TODAY
SUNNY. HIGHS 77 TO 87. WEST WINDS UP TO 10 MPH WITH
GUSTS TO 20 MPH.
TONIGHT
PARTLY CLOUDY. LOWS 44 TO 55. NORTH WINDS 10 TO
15 MPH.
MONDAY
DECREASING CLOUDS. HIGHS 81 TO 91. NORTHEAST WINDS
AROUND 10 MPH IN THE MORNING, SHIFTING TO SOUTH WITH GUSTS TO
25 MPH IN THE AFTERNOON.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS WITH A
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLEAR
AFTER MIDNIGHT. CHANCE OF RAIN 30 PERCENT. LOWS 47 TO 57. SOUTH
WINDS 10 TO 15 MPH. GUSTS TO 25 MPH IN THE EVENING.
TUESDAY
MOSTLY SUNNY. HIGHS 82 TO 92. LIGHT WINDS IN THE
MORNING, BECOMING SOUTH 10 TO 15 MPH WITH GUSTS TO 30 MPH IN THE
AFTERNOON.
TUESDAY NIGHT
DECREASING CLOUDS. LOWS 49 TO 59.
WEDNESDAY THROUGH THURSDAY
PARTLY CLOUDY. HIGHS 81 TO 91. LOWS
46 TO 57.
THURSDAY NIGHT THROUGH SATURDAY
MOSTLY CLEAR. LOWS 44 TO 55.
HIGHS 79 TO 89.
TEMPERATURE
BURNS 85 44 90
=
ORZ063-231600-
MALHEUR COUNTY-
230 AM MDT SUN AUG 23 2026 /130 AM PDT SUN AUG 23 2026/
TODAY
SUNNY. HIGHS 85 TO 91. WEST WINDS 10 TO 15 MPH.
TONIGHT
PARTLY CLOUDY. LOWS 51 TO 61. NORTH WINDS 10 TO 15 MPH
WITH GUSTS TO 25 MPH.
MONDAY
PARTLY SUNNY. HIGHS 88 TO 94. NORTHEAST WINDS 10 TO
15 MPH.
MONDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING. CHANCE OF RAIN 20 PERCENT. LOWS
53 TO 63. SOUTH WINDS 10 TO 15 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS 90 TO 96. LIGHT WINDS IN THE
MORNING, BECOMING SOUTH 10 TO 15 MPH WITH GUSTS TO 25 MPH IN THE
AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS 56 TO 66.
WEDNESDAY THROUGH THURSDAY NIGHT
PARTLY CLOUDY. HIGHS 88 TO
95. LOWS 51 TO 61.
FRIDAY THROUGH SATURDAY
MOSTLY CLEAR. HIGHS 85 TO 92. LOWS
51 TO 61.
=
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