451
FPUS55 KPIH 181637
ZFPPIH
ZONE FORECAST PRODUCT FOR IDAHO
NATIONAL WEATHER SERVICE POCATELLO ID
1037 AM MDT FRI SEP 18 2026
THIS FORECAST MAY NOT BE REPRESENTATIVE OF THE EXACT LOCATION YOU
ARE INTERESTED IN. FOR A SITE-SPECIFIC FORECAST, PLEASE VISIT
WEATHER.GOV/POCATELLO AND CLICK THE MAP ON THE MAIN PAGE.
IDZ072-182200-
SAWTOOTH/STANLEY BASIN-
INCLUDING STANLEY
1037 AM MDT FRI SEP 18 2026
..FLOOD WATCH IN EFFECT THROUGH THIS EVENING
TODAY
SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE
MORNING...THEN NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS
IN THE AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND
HEAVY RAINFALL. HIGHS 55 TO 65.
TONIGHT
RAIN SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING...THEN SCATTERED RAIN SHOWERS AFTER
MIDNIGHT. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND HEAVY
RAINFALL IN THE EVENING. LOWS 35 TO 45.
SATURDAY...MOSTLY CLOUDY. A CHANCE OF RAIN IN THE MORNING
THEN
A CHANCE OF RAIN AND A SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS 54 TO 64.
SATURDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF RAIN.
LOWS 34 TO 44.
SUNDAY
MOSTLY SUNNY. WARMER. HIGHS 62 TO 72.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS 35 TO 45. HIGHS
63 TO 73.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 36 TO 46.
TUESDAY
SUNNY WITH A SLIGHT CHANCE OF RAIN. HIGHS 63 TO 73.
TUESDAY NIGHT THROUGH THURSDAY
MOSTLY CLEAR. LOWS 35 TO 45.
HIGHS 65 TO 75.
IDZ073-182200-
SUN VALLEY REGION-
INCLUDING KETCHUM, SUN VALLEY, AND GALENA
1037 AM MDT FRI SEP 18 2026
..FLOOD WATCH IN EFFECT THROUGH THIS EVENING
TODAY
PARTLY SUNNY. SCATTERED RAIN SHOWERS AND ISOLATED
THUNDERSTORMS IN THE MORNING...THEN SCATTERED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE
SMALL HAIL AND HEAVY RAINFALL IN THE MORNING...THEN SOME
THUNDERSTORMS MAY PRODUCE SMALL HAIL AND HEAVY RAINFALL IN THE
AFTERNOON. HIGHS 57 TO 67.
TONIGHT
MOSTLY CLOUDY. SCATTERED THUNDERSTORMS AND A CHANCE OF
RAIN SHOWERS IN THE EVENING...THEN SCATTERED RAIN SHOWERS AFTER
MIDNIGHT. COLDER. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND
HEAVY RAINFALL IN THE EVENING. LOWS 34 TO 43.
SATURDAY
MOSTLY CLOUDY. A SLIGHT CHANCE OF RAIN IN THE
MORNING...THEN A CHANCE OF RAIN SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 55 TO 65.
SATURDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF RAIN.
LOWS 34 TO 44.
SUNDAY
SUNNY. NOT AS COOL. HIGHS 61 TO 71.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 36 TO 46.
MONDAY AND MONDAY NIGHT
PARTLY CLOUDY. HIGHS 63 TO 73. LOWS
38 TO 48.
TUESDAY
MOSTLY SUNNY WITH A SLIGHT CHANCE OF RAIN. HIGHS 64 TO
74.
TUESDAY NIGHT THROUGH THURSDAY
MOSTLY CLEAR. LOWS 38 TO 48.
HIGHS 66 TO 76.
IDZ052-053-182200-
ARCO/MUD LAKE DESERT-UPPER SNAKE RIVER PLAIN-
INCLUDING MUD LAKE, INL, CRATERS OF THE MOON NM,
IDAHO FALLS, REXBURG, AND ST. ANTHONY
1037 AM MDT FRI SEP 18 2026
..FLOOD WATCH IN EFFECT THROUGH THIS EVENING
TODAY
SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE
MORNING...THEN NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS
IN THE AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND
HEAVY RAINFALL. HIGHS 64 TO 71. NORTHEAST WINDS AROUND 10 MPH...
SHIFTING TO SOUTH IN THE AFTERNOON.
TONIGHT
NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN
THE EVENING...THEN SCATTERED RAIN SHOWERS AND ISOLATED
THUNDERSTORMS AFTER MIDNIGHT. SOME THUNDERSTORMS MAY PRODUCE
SMALL HAIL AND HEAVY RAINFALL IN THE EVENING. LOWS 41 TO 48. EAST
WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION 70 PERCENT.
SATURDAY...MOSTLY CLOUDY. A CHANCE OF RAIN IN THE MORNING
THEN
A CHANCE OF RAIN SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 58 TO 65. SOUTHWEST WINDS UP TO 10 MPH.
CHANCE OF PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF RAIN.
LOWS 39 TO 46. WEST WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION
20 PERCENT.
SUNDAY
MOSTLY SUNNY. HIGHS 63 TO 71. LIGHT AND VARIABLE WINDS.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS 40 TO 47. HIGHS
68 TO 75.
MONDAY NIGHT THROUGH TUESDAY NIGHT
PARTLY CLOUDY. LOWS 41 TO
49. HIGHS 70 TO 77.
WEDNESDAY
SUNNY. HIGHS 70 TO 77.
WEDNESDAY NIGHT AND THURSDAY
MOSTLY CLEAR. LOWS 41 TO 50.
HIGHS 72 TO 79.
IDZ051-182200-
SHOSHONE/LAVA BEDS-
INCLUDING SHOSHONE, RICHFIELD, AND CAREY
1037 AM MDT FRI SEP 18 2026
TODAY
MOSTLY SUNNY. ISOLATED SHOWERS AND THUNDERSTORMS IN THE
MORNING...THEN SCATTERED SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. COOLER. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND
HEAVY RAINFALL. HIGHS 64 TO 71. EAST WINDS UP TO 10 MPH...
SHIFTING TO SOUTHWEST IN THE AFTERNOON.
TONIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING...THEN ISOLATED RAIN SHOWERS AFTER
MIDNIGHT. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND HEAVY
RAINFALL IN THE EVENING. LOWS 40 TO 47. SOUTHWEST WINDS UP TO
10 MPH. CHANCE OF PRECIPITATION 20 PERCENT.
SATURDAY
PARTLY SUNNY. A SLIGHT CHANCE OF RAIN IN THE MORNING.
HIGHS 61 TO 68. SOUTHWEST WINDS UP TO 10 MPH. CHANCE OF
PRECIPITATION 20 PERCENT.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 39 TO 46. SOUTH WINDS UP TO
10 MPH.
SUNDAY
SUNNY, WARMER. HIGHS 68 TO 75. EAST WINDS UP TO 10 MPH.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS 42 TO 49. HIGHS
71 TO 78.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 43 TO 50.
TUESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 73 TO 83. LOWS
43 TO 51.
IDZ056-057-182200-
SOUTHERN HILLS/ALBION MOUNTAINS-RAFT RIVER REGION-
INCLUDING ALBION, ALMO, MALTA, ROCKLAND,
AND HOLBROOK
1037 AM MDT FRI SEP 18 2026
TODAY
MOSTLY SUNNY WITH ISOLATED SHOWERS AND THUNDERSTORMS IN
THE MORNING...THEN NUMEROUS RAIN SHOWERS AND SCATTERED
THUNDERSTORMS IN THE AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE
SMALL HAIL AND HEAVY RAINFALL. HIGHS 62 TO 71. SOUTHEAST WINDS UP
TO 10 MPH...SHIFTING TO SOUTHWEST IN THE AFTERNOON.
TONIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE EVENING. COLDER. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL
AND HEAVY RAINFALL IN THE EVENING. LOWS 38 TO 48. WEST WINDS UP
TO 10 MPH.
SATURDAY
PARTLY SUNNY. A SLIGHT CHANCE OF RAIN IN THE
MORNING...THEN A CHANCE OF RAIN SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 59 TO 66. WEST WINDS UP TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 38 TO 48. SOUTHWEST WINDS
UP TO 10 MPH.
SUNDAY
SUNNY, WARMER. HIGHS 66 TO 73. SOUTH WINDS UP TO
10 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 42 TO 52.
MONDAY AND MONDAY NIGHT
PARTLY CLOUDY. HIGHS 71 TO 78. LOWS
45 TO 54.
TUESDAY
MOSTLY SUNNY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS 71 TO 78.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS 43 TO 53.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 73 TO 82. LOWS
44 TO 54.
IDZ058-059-182200-
MARSH AND ARBON HIGHLANDS-FRANKLIN/EASTERN ONEIDA REGION-
INCLUDING INKOM, MCCAMMON, DOWNEY,
LAVA HOT SPRINGS, MALAD, PRESTON, AND THATCHER
1037 AM MDT FRI SEP 18 2026
..FLOOD WATCH IN EFFECT THROUGH THIS EVENING
TODAY...SCATTERED SHOWERS AND THUNDERSTORMS IN THE MORNING
THEN RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN THE AFTERNOON.
SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND HEAVY RAINFALL.
HIGHS 63 TO 73.
TONIGHT
MOSTLY CLOUDY WITH SCATTERED SHOWERS AND THUNDERSTORMS
IN THE EVENING...THEN PARTLY CLOUDY WITH ISOLATED SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. COLDER. SOME THUNDERSTORMS MAY
PRODUCE SMALL HAIL AND HEAVY RAINFALL IN THE EVENING. LOWS 40 TO
49.
SATURDAY
PARTLY SUNNY. A SLIGHT CHANCE OF RAIN IN THE
MORNING...THEN A CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. HIGHS 55 TO 65.
SATURDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF RAIN.
LOWS 37 TO 47.
SUNDAY
SUNNY, WARMER. HIGHS 61 TO 71.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS 39 TO 49. HIGHS
66 TO 76.
MONDAY NIGHT THROUGH TUESDAY NIGHT
PARTLY CLOUDY. LOWS 42 TO
52. HIGHS 67 TO 77.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 70 TO 80. LOWS
42 TO 52.
IDZ054-182200-
LOWER SNAKE RIVER PLAIN-
INCLUDING POCATELLO, BLACKFOOT, AMERICAN FALLS,
SHELLEY, AND FORT HALL
1037 AM MDT FRI SEP 18 2026
..FLOOD WATCH IN EFFECT THROUGH THIS EVENING
TODAY
SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE
MORNING...THEN NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS
IN THE AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND
HEAVY RAINFALL. HIGHS 66 TO 73. NORTHEAST WINDS UP TO 10 MPH...
SHIFTING TO SOUTH AROUND 10 MPH IN THE AFTERNOON.
TONIGHT
MOSTLY CLOUDY. SCATTERED THUNDERSTORMS AND A CHANCE OF
RAIN SHOWERS IN THE EVENING...THEN ISOLATED SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. COLDER. SOME THUNDERSTORMS MAY
PRODUCE SMALL HAIL AND HEAVY RAINFALL IN THE EVENING. LOWS 41 TO
50. SOUTH WINDS UP TO 10 MPH. CHANCE OF PRECIPITATION 50 PERCENT.
SATURDAY
MOSTLY CLOUDY. A SLIGHT CHANCE OF RAIN IN THE
MORNING...THEN A CHANCE OF RAIN SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 60 TO 67. SOUTHWEST WINDS
AROUND 10 MPH. CHANCE OF PRECIPITATION 50 PERCENT.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 39 TO 48. SOUTHWEST WINDS
UP TO 10 MPH.
SUNDAY
MOSTLY SUNNY. WARMER. HIGHS 67 TO 74. LIGHT AND
VARIABLE WINDS.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS 40 TO 49. HIGHS
71 TO 78.
MONDAY NIGHT THROUGH TUESDAY NIGHT
PARTLY CLOUDY. LOWS 42 TO
51. HIGHS 72 TO 79.
WEDNESDAY
SUNNY. HIGHS 73 TO 80.
WEDNESDAY NIGHT AND THURSDAY
MOSTLY CLEAR. LOWS 42 TO 52.
HIGHS 75 TO 82.
IDZ075-182200-
WOOD RIVER FOOTHILLS-
INCLUDING HAILEY, BELLEVUE, AND PICABO
1037 AM MDT FRI SEP 18 2026
..FLOOD WATCH IN EFFECT THROUGH THIS EVENING
TODAY
PARTLY SUNNY. ISOLATED SHOWERS AND THUNDERSTORMS IN THE
MORNING...THEN SCATTERED SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND HEAVY
RAINFALL. HIGHS 58 TO 68. NORTH WINDS UP TO 10 MPH...SHIFTING TO
SOUTH AROUND 10 MPH IN THE AFTERNOON.
TONIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN SHOWERS AND A SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING...THEN SCATTERED RAIN
SHOWERS AFTER MIDNIGHT. COLDER. SOME THUNDERSTORMS MAY PRODUCE
SMALL HAIL AND HEAVY RAINFALL IN THE EVENING. LOWS 38 TO 46.
NORTHWEST WINDS UP TO 10 MPH IN THE EVENING...BECOMING LIGHT AND
VARIABLE.
SATURDAY
PARTLY SUNNY. A SLIGHT CHANCE OF RAIN IN THE
MORNING...THEN A CHANCE OF RAIN SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS 55 TO 65. LIGHT AND
VARIABLE WINDS...BECOMING SOUTHWEST UP TO 10 MPH IN THE
AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 37 TO 46. NORTH WINDS UP TO
10 MPH.
SUNDAY
SUNNY, WARMER. HIGHS 61 TO 71. EAST WINDS UP TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 40 TO 48.
MONDAY THROUGH TUESDAY
PARTLY CLOUDY. HIGHS 65 TO 75. LOWS
41 TO 50.
TUESDAY NIGHT
MOSTLY CLEAR. LOWS 40 TO 50.
WEDNESDAY
SUNNY. HIGHS 67 TO 77.
WEDNESDAY NIGHT AND THURSDAY
MOSTLY CLEAR. LOWS 41 TO 50.
HIGHS 69 TO 79.
IDZ069-182200-
LOST RIVER RANGE-
INCLUDING BORAH PEAK
1037 AM MDT FRI SEP 18 2026
TODAY
PARTLY SUNNY. ISOLATED SHOWERS AND THUNDERSTORMS IN THE
MORNING...THEN SCATTERED SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND HEAVY
RAINFALL. HIGHS 57 TO 66.
TONIGHT
NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN
THE EVENING...THEN NUMEROUS RAIN SHOWERS AND ISOLATED
THUNDERSTORMS AFTER MIDNIGHT. COLDER. SOME THUNDERSTORMS MAY
PRODUCE SMALL HAIL AND HEAVY RAINFALL IN THE EVENING. LOWS 42 TO
49.
SATURDAY...A CHANCE OF RAIN IN THE MORNING
THEN RAIN SHOWERS
LIKELY AND A SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
HIGHS 52 TO 60.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN. LOWS 40 TO
47.
SUNDAY
MOSTLY SUNNY. NOT AS COOL. HIGHS 59 TO 68.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 41 TO 48.
MONDAY AND MONDAY NIGHT
PARTLY CLOUDY. HIGHS 61 TO 71. LOWS
43 TO 50.
TUESDAY AND TUESDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF
RAIN. HIGHS 63 TO 73. LOWS 42 TO 49.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 65 TO 75. LOWS
43 TO 50.
IDZ063-064-182200-
CARIBOU RANGE-BIG HOLE MOUNTAINS-
INCLUDING WAYAN, SWAN VALLEY, AND VICTOR
1037 AM MDT FRI SEP 18 2026
..FLOOD WATCH IN EFFECT THROUGH THIS EVENING
TODAY...SCATTERED SHOWERS AND THUNDERSTORMS IN THE MORNING
THEN NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN THE
AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND HEAVY
RAINFALL. HIGHS 64 TO 71.
TONIGHT
NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN
THE EVENING...THEN SCATTERED RAIN SHOWERS AND ISOLATED
THUNDERSTORMS AFTER MIDNIGHT. COLDER. SOME THUNDERSTORMS MAY
PRODUCE SMALL HAIL AND HEAVY RAINFALL IN THE EVENING. LOWS 39 TO
47.
SATURDAY
A CHANCE OF RAIN SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE MORNING...THEN RAIN SHOWERS LIKELY AND A
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS 55 TO 62.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS AND
A SLIGHT CHANCE OF THUNDERSTORMS. LOWS 35 TO 45.
SUNDAY
PARTLY SUNNY. HIGHS 59 TO 66.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS 35 TO 45. HIGHS
66 TO 73.
MONDAY NIGHT AND TUESDAY
PARTLY CLOUDY. LOWS 38 TO 48. HIGHS
67 TO 75.
TUESDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS. LOWS 38 TO 48.
WEDNESDAY
SUNNY. HIGHS 68 TO 75.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 38 TO 48.
THURSDAY
SUNNY. HIGHS 70 TO 78.
IDZ068-070-182200-
LOST RIVER VALLEY-CHALLIS/PAHSIMEROI VALLEYS-
INCLUDING HOWE, ARCO, MACKAY, CHILLY, AND CHALLIS
1037 AM MDT FRI SEP 18 2026
..FLOOD WATCH IN EFFECT THROUGH THIS EVENING
TODAY...ISOLATED SHOWERS AND THUNDERSTORMS IN THE MORNING
THEN
NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN THE
AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND HEAVY
RAINFALL. HIGHS 59 TO 69. LIGHT AND VARIABLE WINDS...BECOMING
SOUTHEAST UP TO 10 MPH IN THE AFTERNOON.
TONIGHT
RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN THE
EVENING...THEN NUMEROUS RAIN SHOWERS AND ISOLATED THUNDERSTORMS
AFTER MIDNIGHT. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND
HEAVY RAINFALL IN THE EVENING. LOWS 39 TO 48. NORTHWEST WINDS UP
TO 10 MPH IN THE EVENING...BECOMING LIGHT AND VARIABLE.
SATURDAY...A CHANCE OF RAIN IN THE MORNING
THEN RAIN SHOWERS
LIKELY AND A SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
HIGHS 55 TO 65. LIGHT AND VARIABLE WINDS...BECOMING NORTH UP TO
10 MPH IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN. LOWS 38 TO
47. LIGHT AND VARIABLE WINDS.
SUNDAY
MOSTLY SUNNY. WARMER. HIGHS 62 TO 72. LIGHT AND
VARIABLE WINDS.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS 39 TO 48. HIGHS
65 TO 75.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 41 TO 49.
TUESDAY
MOSTLY SUNNY WITH A SLIGHT CHANCE OF RAIN. HIGHS 66 TO
76.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS 41 TO 49.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 68 TO 78. LOWS
41 TO 49.
IDZ066-067-182200-
CENTENNIAL MOUNTAINS - ISLAND PARK-BEAVERHEAD - LEMHI HIGHLANDS-
INCLUDING ISLAND PARK, KILGORE, DUBOIS, SPENCER,
EDIE SCHOOL, AND SMALL
1037 AM MDT FRI SEP 18 2026
..FLOOD WATCH IN EFFECT THROUGH THIS EVENING
TODAY
SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE
MORNING...THEN NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS
IN THE AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND
HEAVY RAINFALL. HIGHS 60 TO 70.
TONIGHT
NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN
THE EVENING...THEN NUMEROUS RAIN SHOWERS AND ISOLATED
THUNDERSTORMS AFTER MIDNIGHT. COLDER. SOME THUNDERSTORMS MAY
PRODUCE SMALL HAIL AND HEAVY RAINFALL IN THE EVENING. LOWS 38 TO
47.
SATURDAY...MOSTLY CLOUDY. A CHANCE OF RAIN IN THE MORNING
THEN
A CHANCE OF RAIN SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 54 TO 61.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS AND
A SLIGHT CHANCE OF THUNDERSTORMS. LOWS 36 TO 46.
SUNDAY
MOSTLY SUNNY WITH A SLIGHT CHANCE OF RAIN. HIGHS 60 TO
67.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS 35 TO 45. HIGHS
63 TO 71.
MONDAY NIGHT THROUGH TUESDAY NIGHT
PARTLY CLOUDY. LOWS 37 TO
47. HIGHS 66 TO 73.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 66 TO 75. LOWS
37 TO 47.
IDZ065-182200-
TETON VALLEY-
INCLUDING ASHTON, TETONIA, AND DRIGGS
1037 AM MDT FRI SEP 18 2026
..FLOOD WATCH IN EFFECT THROUGH THIS EVENING
TODAY
SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE
MORNING...THEN RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN THE
AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND HEAVY
RAINFALL. HIGHS AROUND 69.
TONIGHT
NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN
THE EVENING...THEN SCATTERED RAIN SHOWERS AND ISOLATED
THUNDERSTORMS AFTER MIDNIGHT. SOME THUNDERSTORMS MAY PRODUCE
SMALL HAIL AND HEAVY RAINFALL IN THE EVENING. LOWS 40 TO 47.
SATURDAY...RAIN LIKELY IN THE MORNING
THEN A CHANCE OF RAIN
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
HIGHS 56 TO 63.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS AND
A SLIGHT CHANCE OF THUNDERSTORMS. LOWS 37 TO 44.
SUNDAY
PARTLY SUNNY WITH A SLIGHT CHANCE OF RAIN. HIGHS 60 TO
67.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS 37 TO 44.
MONDAY
SUNNY. HIGHS 66 TO 73.
MONDAY NIGHT THROUGH TUESDAY NIGHT
PARTLY CLOUDY. LOWS 38 TO
47. HIGHS AROUND 72.
WEDNESDAY
SUNNY. HIGHS AROUND 72.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS 39 TO 46.
THURSDAY
SUNNY. HIGHS AROUND 74.
IDZ062-182200-
BLACKFOOT MOUNTAINS-
INCLUDING GRACE, SODA SPRINGS, HENRY, AND BONE
1037 AM MDT FRI SEP 18 2026
..FLOOD WATCH IN EFFECT THROUGH THIS EVENING
TODAY...SCATTERED SHOWERS AND THUNDERSTORMS IN THE MORNING
THEN RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN THE AFTERNOON.
SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND HEAVY RAINFALL.
HIGHS 63 TO 70.
TONIGHT
NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN
THE EVENING...THEN SCATTERED RAIN SHOWERS AND ISOLATED
THUNDERSTORMS AFTER MIDNIGHT. COLDER. SOME THUNDERSTORMS MAY
PRODUCE SMALL HAIL AND HEAVY RAINFALL IN THE EVENING. LOWS 39 TO
48.
SATURDAY...MOSTLY CLOUDY. A CHANCE OF RAIN IN THE MORNING
THEN
A CHANCE OF RAIN SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 54 TO 63.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS AND
A SLIGHT CHANCE OF THUNDERSTORMS. LOWS 36 TO 46.
SUNDAY
MOSTLY SUNNY. WARMER. HIGHS 59 TO 68.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS 37 TO 47. HIGHS
65 TO 73.
MONDAY NIGHT THROUGH TUESDAY NIGHT
PARTLY CLOUDY. LOWS 40 TO
50. HIGHS 67 TO 75.
WEDNESDAY AND WEDNESDAY NIGHT
MOSTLY CLEAR. HIGHS 67 TO 76.
LOWS 40 TO 50.
THURSDAY
SUNNY. HIGHS 69 TO 78.
IDZ060-182200-
BEAR RIVER RANGE-
INCLUDING EMIGRATION SUMMIT
1037 AM MDT FRI SEP 18 2026
..FLOOD WATCH IN EFFECT THROUGH THIS EVENING
TODAY
NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN THE
MORNING...THEN RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN THE
AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND HEAVY
RAINFALL. HIGHS 64 TO 71.
TONIGHT
NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN
THE EVENING...THEN ISOLATED SHOWERS AND THUNDERSTORMS AFTER
MIDNIGHT. COLDER. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND
HEAVY RAINFALL IN THE EVENING. LOWS 45 TO 52.
SATURDAY
PARTLY SUNNY. A SLIGHT CHANCE OF RAIN IN THE
MORNING...THEN A CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. HIGHS 56 TO 63.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS AND
A SLIGHT CHANCE OF THUNDERSTORMS. LOWS 42 TO 49.
SUNDAY
MOSTLY SUNNY. HIGHS 60 TO 67.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS 45 TO 52. HIGHS
66 TO 73.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 48 TO 55.
TUESDAY AND TUESDAY NIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS. HIGHS 67 TO 74. LOWS 48 TO 55.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 68 TO 77. LOWS
48 TO 55.
IDZ061-182200-
BEAR LAKE VALLEY-
INCLUDING ST. CHARLES, MONTPELIER, AND GEORGETOWN
1037 AM MDT FRI SEP 18 2026
..FLOOD WATCH IN EFFECT THROUGH THIS EVENING
TODAY
NUMEROUS RAIN SHOWERS AND SCATTERED THUNDERSTORMS. SOME
THUNDERSTORMS MAY PRODUCE SMALL HAIL AND HEAVY RAINFALL. HIGHS
AROUND 68.
TONIGHT
RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN THE
EVENING...THEN PARTLY CLOUDY WITH ISOLATED SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. SOME THUNDERSTORMS MAY PRODUCE
SMALL HAIL AND HEAVY RAINFALL IN THE EVENING. LOWS 38 TO 48.
SATURDAY...PARTLY SUNNY. A CHANCE OF RAIN IN THE MORNING
THEN
A CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. HIGHS
57 TO 64.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS AND
A SLIGHT CHANCE OF THUNDERSTORMS. LOWS 34 TO 44.
SUNDAY
MOSTLY SUNNY. HIGHS AROUND 65.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS 35 TO 45. HIGHS
AROUND 70.
MONDAY NIGHT AND TUESDAY
PARTLY CLOUDY. LOWS 38 TO 48. HIGHS
AROUND 71.
TUESDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS. LOWS 38 TO 48.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 70 TO 77. LOWS
38 TO 48.
IDZ071-182200-
FRANK CHURCH WILDERNESS-
INCLUDING CLAYTON
1037 AM MDT FRI SEP 18 2026
..FLOOD WATCH IN EFFECT THROUGH THIS EVENING
TODAY
SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE
MORNING...THEN RAIN SHOWERS AND SCATTERED THUNDERSTORMS IN THE
AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND HEAVY
RAINFALL. HIGHS 57 TO 67.
TONIGHT
RAIN SHOWERS LIKELY AND A SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING...THEN NUMEROUS RAIN SHOWERS AFTER
MIDNIGHT. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND HEAVY
RAINFALL IN THE EVENING. LOWS 37 TO 47.
SATURDAY...MOSTLY CLOUDY. A CHANCE OF RAIN IN THE MORNING
THEN
A CHANCE OF RAIN SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 55 TO 65.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A SLIGHT CHANCE OF RAIN.
LOWS 36 TO 46.
SUNDAY
SUNNY, WARMER. HIGHS 63 TO 73.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS 37 TO 47. HIGHS
64 TO 74.
MONDAY NIGHT
PARTLY CLOUDY. LOWS 38 TO 48.
TUESDAY
SUNNY WITH A SLIGHT CHANCE OF RAIN. HIGHS 64 TO 74.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS 37 TO 47.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 66 TO 76. LOWS
38 TO 47.
IDZ074-182200-
BIG LOST HIGHLANDS/COPPER BASIN-
INCLUDING COPPER BASIN
1037 AM MDT FRI SEP 18 2026
TODAY
PARTLY SUNNY. SCATTERED RAIN SHOWERS AND ISOLATED
THUNDERSTORMS IN THE MORNING...THEN SCATTERED SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE
SMALL HAIL AND HEAVY RAINFALL IN THE MORNING...THEN SOME
THUNDERSTORMS MAY PRODUCE SMALL HAIL AND HEAVY RAINFALL IN THE
AFTERNOON. HIGHS 53 TO 63.
TONIGHT
RAIN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN
THE EVENING...THEN SCATTERED RAIN SHOWERS AND ISOLATED
THUNDERSTORMS AFTER MIDNIGHT. COLDER. SOME THUNDERSTORMS MAY
PRODUCE SMALL HAIL AND HEAVY RAINFALL IN THE EVENING. LOWS 37 TO
47.
SATURDAY...MOSTLY CLOUDY. A CHANCE OF RAIN IN THE MORNING
THEN
A CHANCE OF RAIN SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON. HIGHS 51 TO 59.
SATURDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN. LOWS 37 TO
46.
SUNDAY
MOSTLY SUNNY. NOT AS COOL. HIGHS 59 TO 66.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS 38 TO 48.
MONDAY AND MONDAY NIGHT
PARTLY CLOUDY. HIGHS 61 TO 68. LOWS
40 TO 50.
TUESDAY
MOSTLY SUNNY WITH A SLIGHT CHANCE OF RAIN. HIGHS 61 TO
70.
TUESDAY NIGHT
MOSTLY CLEAR WITH A SLIGHT CHANCE OF RAIN. LOWS
39 TO 49.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 63 TO 73. LOWS
39 TO 49.
IDZ055-182200-
EASTERN MAGIC VALLEY-
INCLUDING BURLEY, RUPERT, HEYBURN, AND OAKLEY
1037 AM MDT FRI SEP 18 2026
TODAY
MOSTLY SUNNY. ISOLATED SHOWERS AND THUNDERSTORMS IN THE
MORNING...THEN SCATTERED SHOWERS AND THUNDERSTORMS IN THE
AFTERNOON. SOME THUNDERSTORMS MAY PRODUCE SMALL HAIL AND HEAVY
RAINFALL. HIGHS 65 TO 72. EAST WINDS UP TO 10 MPH...SHIFTING TO
WEST IN THE AFTERNOON.
TONIGHT
PARTLY CLOUDY. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING. SOME THUNDERSTORMS MAY PRODUCE
SMALL HAIL AND HEAVY RAINFALL IN THE EVENING. LOWS 41 TO 49.
SOUTHWEST WINDS AROUND 10 MPH. CHANCE OF PRECIPITATION
20 PERCENT.
SATURDAY
PARTLY SUNNY WITH A SLIGHT CHANCE OF RAIN. HIGHS
61 TO 68. SOUTHWEST WINDS 10 TO 15 MPH. CHANCE OF PRECIPITATION
20 PERCENT.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS 40 TO 49. SOUTH WINDS UP TO
10 MPH.
SUNDAY
SUNNY, WARMER. HIGHS 68 TO 75. LIGHT AND VARIABLE
WINDS.
SUNDAY NIGHT AND MONDAY
MOSTLY CLEAR. LOWS 43 TO 51. HIGHS
72 TO 79.
MONDAY NIGHT THROUGH TUESDAY NIGHT
PARTLY CLOUDY. LOWS 44 TO
54. HIGHS 73 TO 80.
WEDNESDAY THROUGH THURSDAY
MOSTLY CLEAR. HIGHS 75 TO 84. LOWS
44 TO 54.
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