Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pocatello, ID
Issued by NWS Pocatello, ID
579
FNUS55 KPIH 130907
FWFPIH
Fire Weather Planning Forecast for Southeast Idaho
National Weather Service Pocatello ID
307 AM MDT Sun Sep 13 2026
.DISCUSSION...
* Central Idaho Dispatch Area weather impact summary (Zones 475
and 476)...
Low pressure moving throught the panhandle and west Montana today
and tonight will increase the wind across all of central and eastern
Idaho. Showers will only affect the extreme northern end of the
Fire Weather district. Thunderstorms will stay much farther north.
Temperatures will cool today, and even more from Sunday to Monday.
This aids a rise in humidity both today and again Monday. Warming
and drying returns Tuesday under light wind.
* East Idaho Dispatch Area weather impact summary (Zones 410...411
and 413)...
Low pressure moving throught the panhandle and west Montana today
and tonight will increase the wind across all of central and eastern
Idaho. Showers will only affect the extreme northern end of the
Fire Weather district, including the Targhee portion of the Caribou-
Targhee National Forest. Thunderstorms will stay even farther north.
Temperatures will cool today, and even more from Sunday to Monday.
This aids a rise in humidity both today and again Monday. Warming
and drying returns Tuesday under light wind.
* South Central Idaho Dispatch Area weather impact summary (Zones
422...425 and 427)...
Low pressure moving throught the panhandle and west Montana today
and tonight will increase the wind across all of southern
Idaho. Showers will be possible in the northern part of the Sawtooth
National Forest. Thunderstorms will stay even farther north.
Temperatures will cool today, and even more from Sunday to Monday.
This aids a rise in humidity both today and again Monday. Warming
and drying returns Tuesday under light wind.
IDZ475-132245-
East Salmon River Mountains/Salmon NF-
307 AM MDT Sun Sep 13 2026
.Today...
* Sky/weather........Partly cloudy then becoming sunny. Slight
chance of rain showers in the morning.
* Chc of thunder.....Zero.
* Max Temperature....56-63 valleys. 46-53 ridges.
24 hr trend......11 degrees down.
* Min Humidity.......26-34 percent.
24 hr trend......3 percent up.
* 20ft wind..........
Valleys/lwr slopes...Southwest 9 to 14 mph.
Ridges/upr slopes....Southwest 10 to 15 mph gusts to 30 mph.
* Chc Wetting Rain...10 percent.
* Mixing Height......8750-9750 ft AGL.
* Transport Wind.....Southwest 15 mph increasing to
30 mph in the afternoon.
.TONIGHT...
* Sky/weather........Partly cloudy.
* Chc of thunder.....Zero.
* Min Temperature....34-41 valleys. 28-34 ridges.
24 hr trend......11 degrees down.
* Max Humidity.......68-76 percent valleys. 78-86 percent ridges.
24 hr trend......17 percent up.
* 20ft wind..........
Valleys/lwr slopes...West 9 to 14 mph.
Ridges/upr slopes....West 9 to 14 mph gusts to 25 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......1250-2250 ft AGL.
* Transport Wind.....West 20 mph decreasing to 10 mph
after midnight.
.MONDAY...
* Sky/weather........Partly cloudy then becoming mostly sunny.
* Chc of thunder.....Zero.
* Max Temperature....55-62 valleys. 47-54 ridges.
24 hr trend......Little change.
* Min Humidity.......32-40 percent.
24 hr trend......4 percent up.
* 20ft wind..........
Valleys/lwr slopes...West 2 to 8 mph.
Ridges/upr slopes....Northwest 2 to 8 mph gusts to 15 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......5750-6750 ft AGL.
* Transport Wind.....West 10 to 15 mph.
.Forecast days 3 through 7......
.TUESDAY...Clear. Lows 31 to 38. Highs 58 to 65. Southwest wind
5 to 10 mph gusts to 15 mph.
.WEDNESDAY...Partly cloudy. Lows 35 to 42. Highs 57 to 64.
Northwest wind 5 to 10 mph gusts to 20 mph.
.THURSDAY...Mostly clear. Lows 35 to 42. Highs 61 to 68.
Northwest wind 5 to 10 mph gusts to 20 mph.
.FRIDAY...Mostly clear. Slight chance of rain. Lows in the lower
40s. Highs in the mid 60s.
.SATURDAY...Mostly clear. Lows in the lower 40s. Highs in the
upper 60s.
$$
IDZ476-132245-
Lemhi and Lost River Range/Challis NF-
307 AM MDT Sun Sep 13 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....Zero.
* Max Temperature....62-69 valleys. 51-58 ridges.
24 hr trend......8 degrees down.
* Min Humidity.......15-23 percent valleys. 19-27 percent ridges.
24 hr trend......2 percent down.
* 20ft wind..........
Valleys/lwr slopes...Southwest 14 to 19 mph.
Ridges/upr slopes....Southwest 10 to 20 mph gusts to 35 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......8750-9750 ft AGL.
* Transport Wind.....Southwest 20 mph increasing to
35 mph in the afternoon.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....Zero.
* Min Temperature....30-37.
24 hr trend......13 degrees down.
* Max Humidity.......61-69 percent valleys. 68-76 percent ridges.
24 hr trend......16 percent up.
* 20ft wind..........
Valleys/lwr slopes...West 12 to 17 mph.
Ridges/upr slopes....West 12 to 17 mph gusts to 30 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......1250-2250 ft AGL.
* Transport Wind.....West 20 mph decreasing to 10 mph
after midnight.
.MONDAY...
* Sky/weather........Mostly sunny.
* Chc of thunder.....Zero.
* Max Temperature....58-65 valleys. 48-55 ridges.
24 hr trend......3 degrees down.
* Min Humidity.......25-33 percent.
24 hr trend......7 percent up.
* 20ft wind..........
Valleys/lwr slopes...Northwest 2 to 9 mph.
Ridges/upr slopes....Northwest 2 to 9 mph gusts to 15 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......5750-6750 ft AGL.
* Transport Wind.....Northwest 10 to 15 mph.
.Forecast days 3 through 7......
.TUESDAY...Clear. Lows 30 to 37. Highs 58 to 65. South wind
10 to 15 mph gusts to 20 mph.
.WEDNESDAY...Mostly clear. Lows 35 to 42. Highs 58 to 65.
Northwest wind 10 to 15 mph gusts to 20 mph.
.THURSDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows 34 to 41. Highs 61 to 68. West wind 10 to
15 mph.
.FRIDAY...Mostly clear. Slight chance of rain. Lows around 40.
Highs in the mid 60s.
.SATURDAY...Mostly clear. Lows in the lower 40s. Highs in the
upper 60s.
$$
IDZ422-132245-
Sawtooth Range/Northern Sawtooth NF-
307 AM MDT Sun Sep 13 2026
.Today...
* Sky/weather........Mostly sunny. Slight chance of rain showers in
the morning.
* Chc of thunder.....Zero.
* Max Temperature....60-67 valleys. 47-54 ridges.
24 hr trend......12 degrees down.
* Min Humidity.......21-29 percent valleys. 26-34 percent ridges.
24 hr trend......2 percent up.
* 20ft wind..........
Valleys/lwr slopes...Southwest 7 to 17 mph.
Ridges/upr slopes....Southwest 12 to 17 mph gusts to 30 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......8750-9750 ft AGL.
* Transport Wind.....Southwest 20 mph increasing to
30 mph in the afternoon.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....Zero.
* Min Temperature....28-35.
24 hr trend......13 degrees down.
* Max Humidity.......63-71 percent valleys. 75-83 percent ridges.
24 hr trend......23 percent up.
* 20ft wind..........
Valleys/lwr slopes...West 10 to 15 mph.
Ridges/upr slopes....West 10 to 15 mph gusts to 25 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......1250-2250 ft AGL.
* Transport Wind.....West 20 mph becoming northwest
10 mph after midnight.
.MONDAY...
* Sky/weather........Sunny.
* Chc of thunder.....Zero.
* Max Temperature....59-66 valleys. 49-56 ridges.
24 hr trend......Little change.
* Min Humidity.......24-32 percent valleys. 29-37 percent ridges.
24 hr trend......3 percent up.
* 20ft wind..........
Valleys/lwr slopes...West 2 to 7 mph shifting to the southwest
6 to 11 mph in the afternoon.
Ridges/upr slopes....Northwest 2 to 7 mph. Gusts up to 15 mph
in the afternoon.
* Chc Wetting Rain...Zero.
* Mixing Height......5750-6750 ft AGL.
* Transport Wind.....Northwest 10 to 15 mph.
.Forecast days 3 through 7......
.TUESDAY...Clear. Lows 30 to 37. Highs 59 to 66. Southwest wind
10 to 15 mph gusts to 20 mph.
.WEDNESDAY...Mostly clear. Lows 34 to 41. Highs 60 to 67.
Northwest wind 10 to 15 mph gusts to 20 mph.
.THURSDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows 35 to 42. Highs 61 to 68. North wind 10 to
15 mph gusts to 20 mph.
.FRIDAY...Clear. Slight chance of rain. Lows in the upper 30s.
Highs in the upper 60s.
.SATURDAY...Clear. Lows around 40. Highs around 70.
$$
IDZ425-132245-
Middle Snake River Valley/Twin Falls BLM north of the Snake River-
307 AM MDT Sun Sep 13 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....Zero.
* Max Temperature....Around 72.
24 hr trend......11 degrees down.
* Min Humidity.......26-34 percent.
24 hr trend......8 percent up.
* 20ft wind..........West 9 to 19 mph gusts to 35 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......8750-9750 ft AGL.
* Transport Wind.....West 20 mph increasing to 30 mph
in the afternoon.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....Zero.
* Min Temperature....36-41.
24 hr trend......12 degrees down.
* Max Humidity.......60-68 percent.
24 hr trend......16 percent up.
* 20ft wind..........West 7 to 17 mph gusts to 30 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......1250-2250 ft AGL.
* Transport Wind.....West 15 to 20 mph.
.MONDAY...
* Sky/weather........Sunny.
* Chc of thunder.....Zero.
* Max Temperature....Around 68.
24 hr trend......4 degrees down.
* Min Humidity.......30-38 percent.
24 hr trend......4 percent up.
* 20ft wind..........West 9 to 14 mph gusts to 20 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......6250-7250 ft AGL.
* Transport Wind.....West 15 mph.
.Forecast days 3 through 7......
.TUESDAY...Clear. Lows in the upper 30s. Highs in the mid 70s.
South wind 10 to 15 mph gusts to 20 mph.
.WEDNESDAY...Clear. Lows in the lower 40s. Highs in the mid 70s.
West wind 10 to 15 mph gusts to 20 mph.
.THURSDAY...Mostly clear. Slight chance of rain. Lows in the
lower 40s. Highs in the mid 70s. North wind 5 to 10 mph with
gusts to 20 mph.
.FRIDAY...Clear. Lows in the lower 40s. Highs in the upper 70s.
.SATURDAY...Clear. Lows in the mid 40s. Highs in the lower 80s.
$$
IDZ427-132245-
Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls
BLM south of the Snake River-
307 AM MDT Sun Sep 13 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....Zero.
* Max Temperature....68-75.
24 hr trend......9 degrees down.
* Min Humidity.......27-35 percent valleys. 23-31 percent ridges.
24 hr trend......8 percent up.
* 20ft wind..........
Valleys/lwr slopes...West 10 to 15 mph.
Ridges/upr slopes....West 10 to 15 mph gusts to 25 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......8500-9500 ft AGL.
* Transport Wind.....West 20 mph increasing to 30 mph
in the afternoon.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....Zero.
* Min Temperature....36-43.
24 hr trend......14 degrees down.
* Max Humidity.......58-66 percent valleys. 45-53 percent ridges.
24 hr trend......8 percent up.
* 20ft wind..........
Valleys/lwr slopes...West 11 to 21 mph.
Ridges/upr slopes....West 12 to 22 mph gusts to 35 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......1250-2250 ft AGL.
* Transport Wind.....Northwest 20 to 25 mph.
.MONDAY...
* Sky/weather........Sunny.
* Chc of thunder.....Zero.
* Max Temperature....Around 68 valleys. 59-66 ridges.
24 hr trend......7 degrees down.
* Min Humidity.......29-37 percent.
24 hr trend......2 percent up.
* 20ft wind..........
Valleys/lwr slopes...Northwest 7 to 12 mph.
Ridges/upr slopes....Northwest 7 to 12 mph gusts to 20 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......6000-7000 ft AGL.
* Transport Wind.....West 10 mph.
.Forecast days 3 through 7......
.TUESDAY...Clear. Lows 35 to 42. Highs 70 to 77. Southwest wind
5 to 10 mph gusts to 20 mph.
.WEDNESDAY...Clear. Lows 40 to 47. Highs 67 to 74. West wind
5 to 10 mph gusts to 20 mph.
.THURSDAY...Mostly clear. Lows 40 to 47. Highs 68 to 75. West
winds 10 to 15 mph gusts to 20 mph.
.FRIDAY...Clear. Lows in the mid 40s. Highs in the mid 70s.
.SATURDAY...Clear. Lows in the mid 40s. Highs in the upper 70s.
$$
IDZ410-132245-
Upper Snake River Valley/Idaho Falls BLM-
307 AM MDT Sun Sep 13 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....Zero.
* Max Temperature....68-75.
24 hr trend......6 degrees down.
* Min Humidity.......18-26 percent.
24 hr trend......Little change.
* 20ft wind..........Southwest 13 to 23 mph gusts to 35 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......8000-9000 ft AGL.
* Transport Wind.....Southwest 20 mph increasing to
30 mph in the afternoon.
.TONIGHT...
* Sky/weather........Mostly clear.
* Chc of thunder.....Zero.
* Min Temperature....34-41.
24 hr trend......11 degrees down.
* Max Humidity.......59-67 percent.
24 hr trend......3 percent up.
* 20ft wind..........Southwest 10 to 20 mph gusts to 30 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......1250-2250 ft AGL.
* Transport Wind.....West 15 to 20 mph.
.MONDAY...
* Sky/weather........Sunny.
* Chc of thunder.....Zero.
* Max Temperature....61-68.
24 hr trend......7 degrees down.
* Min Humidity.......22-30 percent.
24 hr trend......5 percent up.
* 20ft wind..........Southwest 9 to 14 mph gusts to 25 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......6500-7500 ft AGL.
* Transport Wind.....West 15 mph.
.Forecast days 3 through 7......
.TUESDAY...Clear. Lows 33 to 39. Highs 68 to 75. South wind
10 to 15 mph gusts to 20 mph.
.WEDNESDAY...Clear. Lows 38 to 45. Highs 69 to 76. West wind
10 to 15 mph gusts to 20 mph.
.THURSDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows 39 to 45. Highs 68 to 75. Northeast wind
10 to 15 mph gusts to 20 mph.
.FRIDAY...Mostly clear. Chance of rain. Lows in the lower 40s.
Highs in the lower 70s.
.SATURDAY...Clear. Lows in the lower 40s. Highs in the upper 70s.
$$
IDZ411-132245-
Centennial Mountains and Snake River Range/Targhee NF-
307 AM MDT Sun Sep 13 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....Zero.
* Max Temperature....69-75 valleys. 61-68 ridges.
24 hr trend......4 degrees down.
* Min Humidity.......22-30 percent.
24 hr trend......Little change.
* 20ft wind..........
Valleys/lwr slopes...Southwest 10 to 20 mph.
Ridges/upr slopes....Southwest 10 to 20 mph. Gusts up to 25 mph
increasing to 35 mph in the afternoon.
* Chc Wetting Rain...Zero.
* Mixing Height......6750-7750 ft AGL.
* Transport Wind.....South 15 mph increasing to southwest
30 mph in the afternoon.
.TONIGHT...
* Sky/weather........Partly cloudy. Slight chance of rain showers
through the night. Slight chance of snow
showers after midnight.
* Chc of thunder.....Zero.
* Min Temperature....32-39.
24 hr trend......12 degrees down.
* Max Humidity.......71-79 percent valleys. 62-70 percent ridges.
24 hr trend......4 percent up.
* 20ft wind..........
Valleys/lwr slopes...Southwest 14 to 19 mph.
Ridges/upr slopes....Southwest 14 to 19 mph gusts to 35 mph.
* Chc Wetting Rain...10 percent.
* Mixing Height......1250-2250 ft AGL.
* Transport Wind.....West 15 mph.
.MONDAY...
* Sky/weather........Sunny.
* Chc of thunder.....Zero.
* Max Temperature....Around 62 valleys. 52-59 ridges.
24 hr trend......9 degrees down.
* Min Humidity.......24-31 percent valleys. 27-35 percent ridges.
24 hr trend......6 percent up.
* 20ft wind..........
Valleys/lwr slopes...Southwest 4 to 9 mph.
Ridges/upr slopes....Southwest 4 to 9 mph gusts to 20 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......6250-7250 ft AGL.
* Transport Wind.....Southwest 10 mph increasing to west
20 mph in the afternoon.
.Forecast days 3 through 7......
.TUESDAY...Clear. Lows 30 to 37. Highs 59 to 66. Southeast wind
10 to 15 mph gusts to 25 mph.
.WEDNESDAY...Mostly clear. Lows 36 to 43. Highs 60 to 67. East
winds 10 to 15 mph gusts to 20 mph.
.THURSDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows 35 to 42. Highs 59 to 66. Northeast wind
10 to 15 mph gusts to 20 mph.
.FRIDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the upper 30s. Highs in the mid 60s.
.SATURDAY...Clear. Lows in the upper 30s. Highs in the upper 60s.
$$
IDZ413-132245-
Caribou Range/Caribou NF-
307 AM MDT Sun Sep 13 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....Zero.
* Max Temperature....73-80 valleys. 66-73 ridges.
24 hr trend......4 degrees down.
* Min Humidity.......20-28 percent.
24 hr trend......3 percent up.
* 20ft wind..........
Valleys/lwr slopes...Southwest 7 to 12 mph.
Ridges/upr slopes....Southwest 8 to 13 mph gusts to 30 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......8500-9500 ft AGL.
* Transport Wind.....Southwest 15 mph increasing to
30 mph in the afternoon.
.TONIGHT...
* Sky/weather........Clear then becoming partly cloudy.
* Chc of thunder.....Zero.
* Min Temperature....36-43.
24 hr trend......12 degrees down.
* Max Humidity.......56-64 percent valleys. 45-53 percent ridges.
24 hr trend......Little change.
* 20ft wind..........
Valleys/lwr slopes...Northwest 7 to 17 mph.
Ridges/upr slopes....Northwest 7 to 17 mph gusts to 30 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......1250-2250 ft AGL.
* Transport Wind.....Northwest 25 mph decreasing to
15 mph after midnight.
.MONDAY...
* Sky/weather........Sunny.
* Chc of thunder.....Zero.
* Max Temperature....63-70 valleys. 56-63 ridges.
24 hr trend......11 degrees down.
* Min Humidity.......22-30 percent.
24 hr trend......Little change.
* 20ft wind..........
Valleys/lwr slopes...West 4 to 9 mph.
Ridges/upr slopes....West 4 to 9 mph gusts to 20 mph.
* Chc Wetting Rain...Zero.
* Mixing Height......6000-7000 ft AGL.
* Transport Wind.....West 10 to 15 mph.
.Forecast days 3 through 7......
.TUESDAY...Clear. Lows 34 to 41. Highs 68 to 75. Northeast wind
5 to 10 mph gusts to 25 mph.
.WEDNESDAY...Mostly clear. Lows 40 to 47. Highs 68 to 75.
Southwest wind 5 to 10 mph gusts to 20 mph.
.THURSDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows 40 to 47. Highs 67 to 74. Southeast wind
5 to 10 mph gusts to 20 mph.
.FRIDAY...Mostly clear. Chance of rain. Lows in the lower 40s.
Highs in the lower 70s.
.SATURDAY...Clear. Lows in the lower 40s. Highs in the mid 70s.
$$
.OUTLOOK from Sunday September 20 to Saturday September 26:
Moderate to high confidence of above normal temperatures.
Low confidence of above normal precipitation.
Messick
$$