314
FNUS55 KPIH 211920
FWFPIH
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST IDAHO
NATIONAL WEATHER SERVICE POCATELLO ID
120 PM MDT MON SEP 21 2026
DISCUSSION
* CENTRAL IDAHO DISPATCH AREA WEATHER IMPACT SUMMARY (ZONES 475
AND 476)...
MAIN IMPACT FIRST 48 TO 60 HOURS WILL BE A CHANCE FOR SHOWERS AND
THUNDERSTORMS TUESDAY INTO WEDNESDAY. DRY CONDITIONS EXPECTED
THURSDAY THROUGH THE WEEKEND WITH THE POTENTIAL FOR WINDIEST
CONDITIONS ON FRIDAY.
* EAST IDAHO DISPATCH AREA WEATHER IMPACT SUMMARY (ZONES 410...411
AND 413)...
MAIN IMPACT FIRST 48 TO 60 HOURS WILL BE A CHANCE FOR SHOWERS AND
THUNDERSTORMS TUESDAY INTO WEDNESDAY. DRY CONDITIONS EXPECTED
THURSDAY THROUGH THE WEEKEND WITH THE POTENTIAL FOR WINDIEST
CONDITIONS ON FRIDAY.
* SOUTH CENTRAL IDAHO DISPATCH AREA WEATHER IMPACT SUMMARY (ZONES
422...425 AND 427)...
MAIN IMPACT FIRST 48 TO 60 HOURS WILL BE A CHANCE FOR SHOWERS AND
THUNDERSTORMS TUESDAY INTO WEDNESDAY. DRY CONDITIONS EXPECTED
THURSDAY THROUGH THE WEEKEND WITH THE POTENTIAL FOR WINDIEST
CONDITIONS ON FRIDAY.
IDZ475-221030-
EAST SALMON RIVER MOUNTAINS/SALMON NF-
120 PM MDT MON SEP 21 2026
TONIGHT
* SKY/WEATHER........MOSTLY CLEAR.
* CHC OF THUNDER.....0 PERCENT.
* MIN TEMPERATURE....41-48.
24 HR TREND......4 DEGREES UP.
* MAX HUMIDITY.......55-63 PERCENT VALLEYS AND 59-67 PERCENT
RIDGES.
24 HR TREND......6 PERCENT DOWN.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...SOUTH 4 TO 5 MPH.
RIDGES/UPR SLOPES....SOUTH 4 TO 6 MPH.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......200-1200 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS.
TUESDAY
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
* CHC OF THUNDER.....20 PERCENT.
* MAX TEMPERATURE....65-72 VALLEYS AND 55-62 RIDGES.
24 HR TREND......2 DEGREES DOWN.
* MIN HUMIDITY.......29-37 PERCENT VALLEYS AND 35-43 PERCENT
RIDGES.
24 HR TREND......5 PERCENT UP.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...LIGHT WINDS BECOMING SOUTHWEST 4 TO 6 MPH
IN THE AFTERNOON.
RIDGES/UPR SLOPES....SOUTHWEST 4 TO 6 MPH.
* CHC WETTING RAIN...10 PERCENT.
* MIXING HEIGHT......8250-9250 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST AROUND 10 MPH
IN THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER........CLOUDY THEN BECOMING PARTLY CLOUDY. CHANCE OF
RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING.
* CHC OF THUNDER.....20 PERCENT.
* MIN TEMPERATURE....40-47.
24 HR TREND......2 DEGREES DOWN.
* MAX HUMIDITY.......70-78 PERCENT.
24 HR TREND......12 PERCENT UP.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...SOUTH 4 TO 5 MPH.
RIDGES/UPR SLOPES....SOUTH 4 TO 6 MPH.
* CHC WETTING RAIN...10 PERCENT.
* MIXING HEIGHT......100-1100 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS.
WEDNESDAY
* SKY/WEATHER........SUNNY.
* CHC OF THUNDER.....0 PERCENT.
* MAX TEMPERATURE....65-72 VALLEYS AND 56-63 RIDGES.
24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......27-35 PERCENT.
24 HR TREND......5 PERCENT DOWN.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...SOUTHWEST 4 TO 8 MPH.
RIDGES/UPR SLOPES....SOUTHWEST 4 TO 9 MPH WITH GUSTS TO AROUND
15 MPH.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......8750-9750 FT AGL.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
MOSTLY CLEAR. LOWS 42 TO 49. HIGHS 67 TO 74. SOUTH
WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 20 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 45 TO 52. HIGHS 60 TO 67. SOUTH
WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
SATURDAY
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN. LOWS 37 TO 44.
HIGHS 53 TO 60. WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND
25 MPH.
SUNDAY
PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE
UPPER 50S.
MONDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN. LOWS IN THE
UPPER 30S. HIGHS IN THE MID 50S.
IDZ476-221030-
LEMHI AND LOST RIVER RANGE/CHALLIS NF-
120 PM MDT MON SEP 21 2026
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY.
* CHC OF THUNDER.....0 PERCENT.
* MIN TEMPERATURE....39-46.
24 HR TREND......3 DEGREES UP.
* MAX HUMIDITY.......63-71 PERCENT.
24 HR TREND......7 PERCENT DOWN.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...SOUTH 4 TO 7 MPH.
RIDGES/UPR SLOPES....SOUTH 4 TO 7 MPH.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......300-1300 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS.
TUESDAY
* SKY/WEATHER........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
* CHC OF THUNDER.....20 PERCENT.
* MAX TEMPERATURE....64-71 VALLEYS AND 52-59 RIDGES.
24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......34-42 PERCENT VALLEYS AND 41-49 PERCENT
RIDGES.
24 HR TREND......5 PERCENT UP.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...SOUTH 4 TO 6 MPH.
RIDGES/UPR SLOPES....SOUTH 4 TO 7 MPH. GUSTS UP TO 15 MPH IN
THE AFTERNOON.
* CHC WETTING RAIN...10 PERCENT.
* MIXING HEIGHT......6500-7500 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTH AROUND 10 MPH IN
THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER........CLOUDY THEN BECOMING PARTLY CLOUDY. CHANCE OF
RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING.
* CHC OF THUNDER.....20 PERCENT.
* MIN TEMPERATURE....38-45.
24 HR TREND......2 DEGREES DOWN.
* MAX HUMIDITY.......76-84 PERCENT.
24 HR TREND......13 PERCENT UP.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...SOUTHWEST 4 TO 6 MPH.
RIDGES/UPR SLOPES....SOUTHWEST 4 TO 6 MPH.
* CHC WETTING RAIN...20 PERCENT.
* MIXING HEIGHT......300-1300 FT AGL.
* TRANSPORT WINDS....WEST AROUND 10 MPH IN THE EVENING BECOMING
LIGHT.
WEDNESDAY
* SKY/WEATHER........SUNNY.
* CHC OF THUNDER.....0 PERCENT.
* MAX TEMPERATURE....65-72 VALLEYS AND 54-61 RIDGES.
24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......27-35 PERCENT VALLEYS AND 34-42 PERCENT
RIDGES.
24 HR TREND......7 PERCENT DOWN.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...SOUTH 4 TO 7 MPH.
RIDGES/UPR SLOPES....SOUTH 4 TO 8 MPH WITH GUSTS TO AROUND 15
MPH.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......8250-9250 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST AROUND 15 MPH
IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
MOSTLY CLEAR. LOWS 41 TO 48. HIGHS 65 TO 72. SOUTH
WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 25 MPH.
FRIDAY
BREEZY. MOSTLY CLEAR. LOWS 43 TO 50. HIGHS 61 TO 68.
SOUTH WINDS 15 TO 25 MPH WITH GUSTS TO AROUND 35 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 38 TO 45. HIGHS 55 TO 62. WEST
WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
SUNDAY
PARTLY CLOUDY. LOWS AROUND 40. HIGHS IN THE UPPER 50S.
MONDAY
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN. LOWS IN THE UPPER
30S. HIGHS IN THE MID 50S.
IDZ422-221030-
SAWTOOTH RANGE/NORTHERN SAWTOOTH NF-
120 PM MDT MON SEP 21 2026
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY.
* CHC OF THUNDER.....0 PERCENT.
* MIN TEMPERATURE....40-47.
24 HR TREND......4 DEGREES UP.
* MAX HUMIDITY.......62-70 PERCENT.
24 HR TREND......10 PERCENT DOWN.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...EAST 4 TO 6 MPH SHIFTING TO THE NORTHEAST
AFTER MIDNIGHT.
RIDGES/UPR SLOPES....SOUTH 4 TO 6 MPH.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......200-1200 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS.
TUESDAY
* SKY/WEATHER........MOSTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
* CHC OF THUNDER.....20 PERCENT.
* MAX TEMPERATURE....63-70 VALLEYS AND 53-60 RIDGES.
24 HR TREND......2 DEGREES DOWN.
* MIN HUMIDITY.......35-43 PERCENT VALLEYS AND 41-49 PERCENT
RIDGES.
24 HR TREND......7 PERCENT UP.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...SOUTHEAST 4 TO 6 MPH.
RIDGES/UPR SLOPES....SOUTH 4 TO 5 MPH BECOMING 4 TO 6 MPH IN
THE AFTERNOON.
* CHC WETTING RAIN...10 PERCENT.
* MIXING HEIGHT......7250-8250 FT AGL.
* TRANSPORT WINDS....SOUTH AROUND 10 MPH.
TUESDAY NIGHT
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING MOSTLY CLEAR.
CHANCE OF RAIN IN THE EVENING.
* CHC OF THUNDER.....0 PERCENT.
* MIN TEMPERATURE....37-44.
24 HR TREND......3 DEGREES DOWN.
* MAX HUMIDITY.......77-85 PERCENT VALLEYS AND 73-81 PERCENT
RIDGES.
24 HR TREND......14 PERCENT UP.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...EAST 4 TO 5 MPH SHIFTING TO THE NORTH
AROUND 4 MPH AFTER MIDNIGHT.
RIDGES/UPR SLOPES....SOUTHWEST 4 TO 5 MPH.
* CHC WETTING RAIN...10 PERCENT.
* MIXING HEIGHT......100-1100 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS.
WEDNESDAY
* SKY/WEATHER........SUNNY.
* CHC OF THUNDER.....0 PERCENT.
* MAX TEMPERATURE....66-73 VALLEYS AND 55-62 RIDGES.
24 HR TREND......2 DEGREES UP.
* MIN HUMIDITY.......24-32 PERCENT VALLEYS AND 29-37 PERCENT
RIDGES.
24 HR TREND......11 PERCENT DOWN.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...NORTH 4 TO 6 MPH SHIFTING TO THE SOUTH 4
TO 7 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....SOUTH 4 TO 9 MPH WITH GUSTS TO AROUND 15
MPH.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......8250-9250 FT AGL.
* TRANSPORT WINDS....SOUTHWEST 10 TO 15 MPH.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 41 TO 48. HIGHS 65 TO 72. SOUTHEAST WINDS
10 TO 15 MPH WITH GUSTS TO AROUND 20 MPH.
FRIDAY
PARTLY CLOUDY. LOWS 43 TO 50. HIGHS 61 TO 68. SOUTH
WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
SATURDAY
PARTLY CLOUDY. LOWS 37 TO 44. HIGHS 55 TO 62. WEST
WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
SUNDAY
PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE
UPPER 50S.
MONDAY
PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE MID
50S.
IDZ425-221030-
MIDDLE SNAKE RIVER VALLEY/TWIN FALLS BLM NORTH OF THE SNAKE RIVER-
120 PM MDT MON SEP 21 2026
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHC OF THUNDER.....0 PERCENT.
* MIN TEMPERATURE....46-51.
24 HR TREND......5 DEGREES UP.
* MAX HUMIDITY.......67-75 PERCENT.
24 HR TREND......12 PERCENT DOWN.
* 20FT WINDS.........NORTHEAST WINDS 4 TO 9 MPH WITH GUSTS TO
AROUND 15 MPH.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......100-1100 FT AGL.
* TRANSPORT WINDS....EAST AROUND 10 MPH.
TUESDAY
* SKY/WEATHER........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE AFTERNOON.
* CHC OF THUNDER.....0 PERCENT.
* MAX TEMPERATURE....AROUND 73.
24 HR TREND......3 DEGREES DOWN.
* MIN HUMIDITY.......40-48 PERCENT.
24 HR TREND......12 PERCENT UP.
* 20FT WINDS.........EAST WINDS 4 TO 9 MPH WITH GUSTS TO AROUND 15
MPH.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......6250-7250 FT AGL.
* TRANSPORT WINDS....SOUTHEAST AROUND 10 MPH.
TUESDAY NIGHT
* SKY/WEATHER........PARTLY CLOUDY.
* CHC OF THUNDER.....0 PERCENT.
* MIN TEMPERATURE....AROUND 45.
24 HR TREND......4 DEGREES DOWN.
* MAX HUMIDITY.......90-98 PERCENT.
24 HR TREND......25 PERCENT UP.
* 20FT WINDS.........EAST WINDS 4 TO 6 MPH. GUSTS UP TO 15 MPH IN
THE EVENING.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......200-1200 FT AGL.
* TRANSPORT WINDS....EAST AROUND 10 MPH.
WEDNESDAY
* SKY/WEATHER........SUNNY.
* CHC OF THUNDER.....0 PERCENT.
* MAX TEMPERATURE....75-80.
24 HR TREND......5 DEGREES UP.
* MIN HUMIDITY.......23-31 PERCENT.
24 HR TREND......16 PERCENT DOWN.
* 20FT WINDS.........EAST WINDS 4 TO 7 MPH WITH GUSTS TO AROUND 15
MPH.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......8750-9750 FT AGL.
* TRANSPORT WINDS....EAST AROUND 10 MPH SHIFTING TO THE SOUTH IN
THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 47 TO 52. HIGHS 79 TO 84. EAST WINDS
10 TO 15 MPH WITH GUSTS TO AROUND 20 MPH.
FRIDAY
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE UPPER
70S. SOUTHEAST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
SATURDAY
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE
LOWER 70S. WEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
SUNDAY
PARTLY CLOUDY. LOWS IN THE MID 40S. HIGHS IN THE LOWER
70S.
MONDAY
PARTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE
UPPER 60S.
IDZ427-221030-
GOOSE CREEK AND RAFT RIVER VALLEY/SOUTHERN SAWTOOTH NF/TWIN FALLS
BLM SOUTH OF THE SNAKE RIVER-
120 PM MDT MON SEP 21 2026
TONIGHT
* SKY/WEATHER........MOSTLY CLOUDY.
* CHC OF THUNDER.....0 PERCENT.
* MIN TEMPERATURE....48-55.
24 HR TREND......6 DEGREES UP.
* MAX HUMIDITY.......61-69 PERCENT VALLEYS AND 54-62 PERCENT
RIDGES.
24 HR TREND......7 PERCENT DOWN.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...SOUTHEAST 4 TO 9 MPH.
RIDGES/UPR SLOPES....SOUTH 5 TO 10 MPH WITH GUSTS TO AROUND 15
MPH.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......100-1100 FT AGL.
* TRANSPORT WINDS....SOUTH AROUND 10 MPH.
TUESDAY
* SKY/WEATHER........CLOUDY. CHANCE OF RAIN IN THE MORNING, THEN
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE AFTERNOON.
* CHC OF THUNDER.....20 PERCENT.
* MAX TEMPERATURE....66-72 VALLEYS AND 59-66 RIDGES.
24 HR TREND......8 DEGREES DOWN.
* MIN HUMIDITY.......44-52 PERCENT VALLEYS AND 50-58 PERCENT
RIDGES.
24 HR TREND......23 PERCENT UP.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...SOUTH 5 TO 10 MPH.
RIDGES/UPR SLOPES....SOUTH 5 TO 10 MPH WITH GUSTS TO AROUND 20
MPH.
* CHC WETTING RAIN...10 PERCENT.
* MIXING HEIGHT......6000-7000 FT AGL.
* TRANSPORT WINDS....SOUTH 10 TO 15 MPH.
TUESDAY NIGHT
* SKY/WEATHER........PARTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS
IN THE EVENING.
* CHC OF THUNDER.....0 PERCENT.
* MIN TEMPERATURE....43-50.
24 HR TREND......5 DEGREES DOWN.
* MAX HUMIDITY.......80-88 PERCENT VALLEYS AND 72-80 PERCENT
RIDGES.
24 HR TREND......18 PERCENT UP.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...SOUTH 4 TO 7 MPH.
RIDGES/UPR SLOPES....SOUTH 4 TO 7 MPH. GUSTS UP TO 15 MPH AFTER
MIDNIGHT.
* CHC WETTING RAIN...10 PERCENT.
* MIXING HEIGHT......100-1100 FT AGL.
* TRANSPORT WINDS....SOUTH AROUND 10 MPH.
WEDNESDAY
* SKY/WEATHER........SUNNY.
* CHC OF THUNDER.....0 PERCENT.
* MAX TEMPERATURE....70-77.
24 HR TREND......8 DEGREES UP.
* MIN HUMIDITY.......24-32 PERCENT.
24 HR TREND......24 PERCENT DOWN.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...SOUTHEAST 4 TO 7 MPH.
RIDGES/UPR SLOPES....SOUTHEAST 4 TO 7 MPH WITH GUSTS TO AROUND
15 MPH.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......9250-10250 FT AGL.
* TRANSPORT WINDS....SOUTH AROUND 10 MPH.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 47 TO 54. HIGHS 74 TO 81. SOUTHEAST WINDS
10 TO 20 MPH WITH GUSTS TO AROUND 25 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 50 TO 57. HIGHS 71 TO 78. SOUTH
WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 44 TO 51. HIGHS 66 TO 73. WEST
WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 25 MPH.
SUNDAY
PARTLY CLOUDY. LOWS IN THE MID 40S. HIGHS AROUND 70.
MONDAY
PARTLY CLOUDY. LOWS IN THE MID 40S. HIGHS IN THE MID
60S.
IDZ410-221030-
UPPER SNAKE RIVER VALLEY/IDAHO FALLS BLM-
120 PM MDT MON SEP 21 2026
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY.
* CHC OF THUNDER.....0 PERCENT.
* MIN TEMPERATURE....40-46.
24 HR TREND......4 DEGREES UP.
* MAX HUMIDITY.......74-82 PERCENT.
24 HR TREND......10 PERCENT DOWN.
* 20FT WINDS.........NORTHEAST WINDS 4 TO 6 MPH. GUSTS UP TO 15 MPH
AFTER MIDNIGHT.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......300-1300 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS.
TUESDAY
* SKY/WEATHER........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* CHC OF THUNDER.....10 PERCENT.
* MAX TEMPERATURE....65-71.
24 HR TREND......2 DEGREES DOWN.
* MIN HUMIDITY.......40-48 PERCENT.
24 HR TREND......8 PERCENT UP.
* 20FT WINDS.........EAST WINDS 4 TO 7 MPH SHIFTING TO THE SOUTH 5
TO 8 MPH IN THE AFTERNOON. GUSTS UP TO 15 MPH.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......5000-6000 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTH AROUND 10 MPH IN
THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS IN THE EVENING.
* CHC OF THUNDER.....20 PERCENT.
* MIN TEMPERATURE....39-45.
24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......88-96 PERCENT.
24 HR TREND......17 PERCENT UP.
* 20FT WINDS.........SOUTH WINDS 4 TO 6 MPH WITH GUSTS TO AROUND 15
MPH SHIFTING TO THE EAST AROUND 4 MPH AFTER
MIDNIGHT.
* CHC WETTING RAIN...10 PERCENT.
* MIXING HEIGHT......200-1200 FT AGL.
* TRANSPORT WINDS....SOUTHWEST AROUND 10 MPH IN THE EVENING
BECOMING LIGHT.
WEDNESDAY
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING SUNNY.
* CHC OF THUNDER.....0 PERCENT.
* MAX TEMPERATURE....67-74.
24 HR TREND......3 DEGREES UP.
* MIN HUMIDITY.......29-37 PERCENT.
24 HR TREND......9 PERCENT DOWN.
* 20FT WINDS.........NORTHEAST WINDS 4 TO 6 MPH SHIFTING TO THE
SOUTH IN THE AFTERNOON. GUSTS UP TO 15 MPH.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......6500-7500 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST AROUND 10 MPH
IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 41 TO 47. HIGHS 72 TO 79. EAST WINDS
10 TO 15 MPH WITH GUSTS TO AROUND 20 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 44 TO 51. HIGHS 71 TO 78. SOUTH
WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 43 TO 50. HIGHS 65 TO 72.
SOUTHWEST WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
SUNDAY
PARTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS AROUND 70.
MONDAY
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN. LOWS IN THE LOWER
40S. HIGHS IN THE MID 60S.
IDZ411-221030-
CENTENNIAL MOUNTAINS AND SNAKE RIVER RANGE/TARGHEE NF-
120 PM MDT MON SEP 21 2026
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY.
* CHC OF THUNDER.....0 PERCENT.
* MIN TEMPERATURE....37-44.
24 HR TREND......5 DEGREES UP.
* MAX HUMIDITY.......82-90 PERCENT VALLEYS AND 70-78 PERCENT
RIDGES.
24 HR TREND......11 PERCENT DOWN.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...LIGHT WINDS BECOMING NORTHEAST 4 TO 5 MPH
AFTER MIDNIGHT.
RIDGES/UPR SLOPES....SOUTH 4 TO 5 MPH SHIFTING TO THE EAST
AFTER MIDNIGHT.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......300-1300 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS.
TUESDAY
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN
THE AFTERNOON.
* CHC OF THUNDER.....10 PERCENT.
* MAX TEMPERATURE....AROUND 68 VALLEYS AND 58-65 RIDGES.
24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......41-49 PERCENT.
24 HR TREND......5 PERCENT UP.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...EAST 4 TO 5 MPH SHIFTING TO THE SOUTHWEST
4 TO 6 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....SOUTHEAST 4 TO 5 MPH SHIFTING TO THE
SOUTHWEST 4 TO 7 MPH WITH GUSTS TO AROUND
15 MPH IN THE AFTERNOON.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......5500-6500 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST AROUND 10 MPH
IN THE AFTERNOON.
TUESDAY NIGHT
* SKY/WEATHER........CLOUDY. CHANCE OF RAIN SHOWERS AND SLIGHT
CHANCE OF THUNDERSTORMS IN THE EVENING, THEN
CHANCE OF RAIN AFTER MIDNIGHT.
* CHC OF THUNDER.....20 PERCENT.
* MIN TEMPERATURE....37-44.
24 HR TREND......LITTLE CHANGE.
* MAX HUMIDITY.......91-99 PERCENT VALLEYS AND 87-95 PERCENT
RIDGES.
24 HR TREND......16 PERCENT UP.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...LIGHT WINDS.
RIDGES/UPR SLOPES....SOUTHWEST 4 TO 5 MPH WITH GUSTS TO AROUND
15 MPH IN THE EVENING BECOMING LIGHT.
* CHC WETTING RAIN...20 PERCENT.
* MIXING HEIGHT......300-1300 FT AGL.
* TRANSPORT WINDS....SOUTH AROUND 10 MPH IN THE EVENING BECOMING
LIGHT.
WEDNESDAY
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING SUNNY.
* CHC OF THUNDER.....0 PERCENT.
* MAX TEMPERATURE....AROUND 68 VALLEYS AND 58-65 RIDGES.
24 HR TREND......LITTLE CHANGE.
* MIN HUMIDITY.......32-38 PERCENT VALLEYS AND 38-46 PERCENT
RIDGES.
24 HR TREND......2 PERCENT DOWN.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...LIGHT WINDS BECOMING SOUTHWEST 4 TO 5 MPH
IN THE AFTERNOON.
RIDGES/UPR SLOPES....SOUTH 4 TO 7 MPH. GUSTS UP TO 15 MPH IN
THE AFTERNOON.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......5250-6250 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS BECOMING SOUTHWEST AROUND 10 MPH
IN THE AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 37 TO 44. HIGHS 64 TO 71. SOUTHEAST WINDS
10 TO 15 MPH WITH GUSTS TO AROUND 25 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 42 TO 49. HIGHS 62 TO 69. SOUTHEAST
WINDS 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 41 TO 48. HIGHS 57 TO 64. SOUTH
WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 30 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 60S.
MONDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE MID 50S.
IDZ413-221030-
CARIBOU RANGE/CARIBOU NF-
120 PM MDT MON SEP 21 2026
TONIGHT
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
* CHC OF THUNDER.....0 PERCENT.
* MIN TEMPERATURE....42-49.
24 HR TREND......6 DEGREES UP.
* MAX HUMIDITY.......63-71 PERCENT.
24 HR TREND......13 PERCENT DOWN.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...SOUTHEAST 4 TO 6 MPH.
RIDGES/UPR SLOPES....SOUTHEAST 4 TO 6 MPH.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......300-1300 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS.
TUESDAY
* SKY/WEATHER........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN IN THE
MORNING, THEN CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
* CHC OF THUNDER.....40 PERCENT.
* MAX TEMPERATURE....63-69 VALLEYS AND 56-63 RIDGES.
24 HR TREND......5 DEGREES DOWN.
* MIN HUMIDITY.......50-58 PERCENT VALLEYS AND 54-62 PERCENT
RIDGES.
24 HR TREND......23 PERCENT UP.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...SOUTH 4 TO 6 MPH.
RIDGES/UPR SLOPES....SOUTH 4 TO 6 MPH WITH GUSTS TO AROUND 15
MPH.
* CHC WETTING RAIN...10 PERCENT.
* MIXING HEIGHT......4500-5500 FT AGL.
* TRANSPORT WINDS....SOUTH AROUND 10 MPH.
TUESDAY NIGHT
* SKY/WEATHER........PARTLY CLOUDY. CHANCE OF RAIN SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
* CHC OF THUNDER.....20 PERCENT.
* MIN TEMPERATURE....39-46.
24 HR TREND......4 DEGREES DOWN.
* MAX HUMIDITY.......85-93 PERCENT.
24 HR TREND......25 PERCENT UP.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...SOUTHEAST 4 TO 5 MPH.
RIDGES/UPR SLOPES....SOUTHEAST 4 TO 5 MPH.
* CHC WETTING RAIN...10 PERCENT.
* MIXING HEIGHT......300-1300 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS.
WEDNESDAY
* SKY/WEATHER........PARTLY CLOUDY THEN BECOMING SUNNY.
* CHC OF THUNDER.....0 PERCENT.
* MAX TEMPERATURE....68-75 VALLEYS AND 60-66 RIDGES.
24 HR TREND......4 DEGREES UP.
* MIN HUMIDITY.......29-37 PERCENT VALLEYS AND 33-41 PERCENT
RIDGES.
24 HR TREND......20 PERCENT DOWN.
* 20FT WINDS.........
VALLEYS/LWR SLOPES...SOUTHEAST 4 TO 6 MPH SHIFTING TO THE
SOUTHWEST 4 TO 5 MPH IN THE AFTERNOON.
RIDGES/UPR SLOPES....SOUTHEAST 4 TO 6 MPH SHIFTING TO THE
SOUTHWEST IN THE AFTERNOON. GUSTS UP TO 15
MPH.
* CHC WETTING RAIN...0 PERCENT.
* MIXING HEIGHT......6750-7750 FT AGL.
* TRANSPORT WINDS....LIGHT WINDS BECOMING WEST AROUND 10 MPH IN THE
AFTERNOON.
FORECAST DAYS 3 THROUGH 7...
THURSDAY
CLEAR. LOWS 41 TO 48. HIGHS 69 TO 76. SOUTHEAST WINDS
10 TO 15 MPH WITH GUSTS TO AROUND 20 MPH.
FRIDAY
MOSTLY CLEAR. LOWS 45 TO 52. HIGHS 69 TO 76. SOUTH
WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 25 MPH.
SATURDAY
MOSTLY CLEAR. LOWS 43 TO 50. HIGHS 65 TO 72.
SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 25 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN. LOWS IN THE
MID 40S. HIGHS IN THE UPPER 60S.
MONDAY
PARTLY CLOUDY. SLIGHT CHANCE OF RAIN. LOWS IN THE MID
40S. HIGHS IN THE LOWER 60S.
OUTLOOK FOR TUESDAY SEPTEMBER 29 THROUGH MONDAY OCTOBER 5
ABOVE NORMAL TEMPERATURES AND NEAR NORMAL PRECIPITATION.
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