Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pocatello, ID
Issued by NWS Pocatello, ID
683
FNUS55 KPIH 200716
FWFPIH
Fire Weather Planning Forecast for Southeast Idaho
National Weather Service Pocatello ID
116 AM MDT Sun Sep 20 2026
.DISCUSSION...
* Central Idaho Dispatch Area weather impact summary (Zones 475
and 476)...
Drier weather will set in for most of the week. There`s an outside
shot at a few light rain showers Tuesday as a weak system passes
through. Winds look mostly light into midweek.
* East Idaho Dispatch Area weather impact summary (Zones 410...411
and 413)...
Drier weather will set in for most of the week. There`s an outside
shot at a few light rain showers Tuesday as a weak system passes
through. Winds look mostly light into midweek.
* South Central Idaho Dispatch Area weather impact summary (Zones
422...425 and 427)...
Drier weather will set in for most of the week. There`s an outside
shot at a few light rain showers Tuesday as a weak system passes
through. Winds look mostly light into midweek.
IDZ475-202230-
East Salmon River Mountains/Salmon NF-
116 AM MDT Sun Sep 20 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....63-70 valleys and 54-61 ridges.
24 hr trend......7 degrees up.
* Min Humidity.......33-41 percent.
24 hr trend......20 percent down.
* 20ft winds.........
Valleys/lwr slopes...Light winds becoming northeast 4 to 5 mph
in the afternoon.
Ridges/upr slopes....Light winds becoming north 4 to 6 mph in
the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......6000-7000 ft AGL.
* Transport Winds....Light winds.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....38-45.
24 hr trend......Little change.
* Max Humidity.......62-70 percent valleys and 66-74 percent
ridges.
24 hr trend......18 percent down.
* 20ft winds.........
Valleys/lwr slopes...Northeast around 4 mph shifting to the
southeast after midnight.
Ridges/upr slopes....Northeast 4 to 5 mph shifting to the south
after midnight.
* Chc Wetting Rain...0 percent.
* Mixing Height......100-1100 ft AGL.
* Transport Winds....Light winds.
.MONDAY...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....67-74 valleys and 58-65 ridges.
24 hr trend......4 degrees up.
* Min Humidity.......25-33 percent.
24 hr trend......8 percent down.
* 20ft winds.........
Valleys/lwr slopes...Light winds becoming southwest around 4
mph in the afternoon.
Ridges/upr slopes....South 4 to 5 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......8250-9250 ft AGL.
* Transport Winds....Light winds becoming southwest around 10 mph
in the afternoon.
.Forecast days 3 through 7......
.TUESDAY...Partly cloudy. Lows 41 to 48. Highs 63 to 70. South
winds 5 to 10 mph with gusts to around 15 mph.
.WEDNESDAY...Partly cloudy. Lows 42 to 49. Highs 63 to 70. South
winds 10 to 15 mph with gusts to around 20 mph.
.THURSDAY...Partly cloudy. Lows 41 to 48. Highs 66 to 73. South
winds 10 to 15 mph with gusts to around 20 mph.
.FRIDAY...Partly cloudy. Lows in the upper 40s. Highs in the
upper 60s.
.SATURDAY...Partly cloudy. Lows in the mid 40s. Highs around 60.
$$
IDZ476-202230-
Lemhi and Lost River Range/Challis NF-
116 AM MDT Sun Sep 20 2026
.Today...
* Sky/weather........Mostly sunny.
* Chc of thunder.....0 percent.
* Max Temperature....61-68 valleys and 51-58 ridges.
24 hr trend......6 degrees up.
* Min Humidity.......34-42 percent valleys and 44-52 percent
ridges.
24 hr trend......16 percent down.
* 20ft winds.........
Valleys/lwr slopes...Light winds becoming north 4 to 5 mph in
the afternoon.
Ridges/upr slopes....North 4 to 6 mph. Gusts up to 15 mph in
the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......5000-6000 ft AGL.
* Transport Winds....Light winds.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....36-43.
24 hr trend......Little change.
* Max Humidity.......71-79 percent.
24 hr trend......14 percent down.
* 20ft winds.........
Valleys/lwr slopes...Northeast 4 to 5 mph shifting to the
southeast after midnight.
Ridges/upr slopes....Northeast 4 to 6 mph shifting to the south
after midnight.
* Chc Wetting Rain...0 percent.
* Mixing Height......200-1200 ft AGL.
* Transport Winds....Light winds.
.MONDAY...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....66-73 valleys and 55-62 ridges.
24 hr trend......5 degrees up.
* Min Humidity.......25-33 percent valleys and 34-42 percent
ridges.
24 hr trend......9 percent down.
* 20ft winds.........
Valleys/lwr slopes...Light winds becoming southeast 4 to 5 mph
in the afternoon.
Ridges/upr slopes....South 4 to 6 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......
.TUESDAY...Partly cloudy. Lows 39 to 46. Highs 62 to 69. South
winds 5 to 10 mph with gusts to around 15 mph.
.WEDNESDAY...Partly cloudy. Slight chance of rain. Lows 40 to 47.
Highs 62 to 69. Southwest winds 10 to 15 mph with gusts to around
20 mph.
.THURSDAY...Partly cloudy. Lows 40 to 47. Highs 65 to 72. South
winds 10 to 15 mph with gusts to around 25 mph.
.FRIDAY...Mostly clear. Lows in the mid 40s. Highs in the upper
60s.
.SATURDAY...Partly cloudy. Lows in the mid 40s. Highs in the
lower 60s.
$$
IDZ422-202230-
Sawtooth Range/Northern Sawtooth NF-
116 AM MDT Sun Sep 20 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....62-69 valleys and 54-61 ridges.
24 hr trend......6 degrees up.
* Min Humidity.......34-42 percent valleys and 38-46 percent
ridges.
24 hr trend......11 percent down.
* 20ft winds.........
Valleys/lwr slopes...North 4 to 5 mph shifting to the south 4
to 6 mph in the afternoon.
Ridges/upr slopes....Northwest 4 to 6 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......6000-7000 ft AGL.
* Transport Winds....Light winds.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....36-43.
24 hr trend......Little change.
* Max Humidity.......75-83 percent.
24 hr trend......9 percent down.
* 20ft winds.........
Valleys/lwr slopes...Southeast 4 to 5 mph shifting to the
northeast 4 to 6 mph after midnight.
Ridges/upr slopes....Southeast 4 to 6 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......100-1100 ft AGL.
* Transport Winds....Light winds.
.MONDAY...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....67-74 valleys and 57-64 ridges.
24 hr trend......3 degrees up.
* Min Humidity.......25-33 percent valleys and 31-39 percent
ridges.
24 hr trend......9 percent down.
* 20ft winds.........
Valleys/lwr slopes...Northeast 4 to 6 mph shifting to the
southeast in the afternoon.
Ridges/upr slopes....South 4 to 6 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......8000-9000 ft AGL.
* Transport Winds....Light winds becoming south around 10 mph in
the afternoon.
.Forecast days 3 through 7......
.TUESDAY...Partly cloudy. Lows 39 to 46. Highs 64 to 71.
Southeast winds 5 to 10 mph with gusts to around 15 mph.
.WEDNESDAY...Partly cloudy. Lows 40 to 47. Highs 64 to 71. South
winds 10 to 15 mph with gusts to around 20 mph.
.THURSDAY...Mostly clear. Lows 40 to 47. Highs 66 to 73.
Southeast winds 10 to 15 mph with gusts to around 20 mph.
.FRIDAY...Mostly clear. Lows in the mid 40s. Highs in the upper
60s.
.SATURDAY...Partly cloudy. Lows in the mid 40s. Highs in the
lower 60s.
$$
IDZ425-202230-
Middle Snake River Valley/Twin Falls BLM north of the Snake River-
116 AM MDT Sun Sep 20 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....Around 72.
24 hr trend......6 degrees up.
* Min Humidity.......36-44 percent.
24 hr trend......10 percent down.
* 20ft winds.........East winds 4 to 6 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......5500-6500 ft AGL.
* Transport Winds....Light winds.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....41-46.
24 hr trend......2 degrees up.
* Max Humidity.......84-92 percent.
24 hr trend......10 percent down.
* 20ft winds.........East winds 4 to 8 mph. Gusts up to 15 mph
after midnight.
* Chc Wetting Rain...0 percent.
* Mixing Height......100-1100 ft AGL.
* Transport Winds....Light winds becoming east around 10 mph after
midnight.
.MONDAY...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....74-79.
24 hr trend......5 degrees up.
* Min Humidity.......25-33 percent.
24 hr trend......11 percent down.
* 20ft winds.........East winds 4 to 9 mph with gusts to around 15
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......7500-8500 ft AGL.
* Transport Winds....East around 10 mph.
.Forecast days 3 through 7......
.TUESDAY...Partly cloudy. Lows 45 to 50. Highs in the upper 70s.
East winds 5 to 10 mph with gusts to around 20 mph.
.WEDNESDAY...Partly cloudy. Lows in the upper 40s. Highs around
80. Southeast winds 5 to 10 mph with gusts to around 20 mph.
.THURSDAY...Mostly clear. Lows in the upper 40s. Highs in the
lower 80s. East winds 5 to 10 mph with gusts to around 20 mph.
.FRIDAY...Mostly clear. Lows in the lower 50s. Highs in the lower
80s.
.SATURDAY...Partly cloudy. Lows around 50. Highs in the upper
70s.
$$
IDZ427-202230-
Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls
BLM south of the Snake River-
116 AM MDT Sun Sep 20 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....65-72.
24 hr trend......7 degrees up.
* Min Humidity.......34-42 percent.
24 hr trend......14 percent down.
* 20ft winds.........
Valleys/lwr slopes...Southeast 4 to 5 mph shifting to the
northeast 4 to 6 mph in the afternoon.
Ridges/upr slopes....South 4 to 5 mph shifting to the north 4
to 6 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.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....40-47.
24 hr trend......3 degrees up.
* Max Humidity.......76-84 percent valleys and 63-71 percent
ridges.
24 hr trend......11 percent down.
* 20ft winds.........
Valleys/lwr slopes...East 4 to 6 mph shifting to the southeast
after midnight.
Ridges/upr slopes....East 4 to 6 mph with gusts to around 15
mph shifting to the southeast after
midnight.
* Chc Wetting Rain...0 percent.
* Mixing Height......100-1100 ft AGL.
* Transport Winds....East around 10 mph shifting to the southeast
after midnight.
.MONDAY...
* Sky/weather........Mostly sunny then becoming partly cloudy.
* Chc of thunder.....0 percent.
* Max Temperature....Around 76 valleys and 68-75 ridges.
24 hr trend......5 degrees up.
* Min Humidity.......24-32 percent.
24 hr trend......10 percent down.
* 20ft winds.........
Valleys/lwr slopes...Southeast 4 to 8 mph.
Ridges/upr slopes....Southeast 4 to 8 mph. Gusts up to 15 mph
in the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......8250-9250 ft AGL.
* Transport Winds....South around 10 mph.
.Forecast days 3 through 7......
.TUESDAY...Partly cloudy. Lows 46 to 53. Highs 69 to 76.
Southeast winds 10 to 15 mph with gusts to around 20 mph.
.WEDNESDAY...Mostly clear. Lows 45 to 52. Highs 72 to 79. South
winds 10 to 15 mph with gusts to around 20 mph.
.THURSDAY...Mostly clear. Lows 46 to 53. Highs 74 to 81. South
winds 10 to 20 mph with gusts to around 25 mph.
.FRIDAY...Mostly clear. Lows in the lower 50s. Highs in the upper
70s.
.SATURDAY...Partly cloudy. Lows in the lower 50s. Highs in the
mid 70s.
$$
IDZ410-202230-
Upper Snake River Valley/Idaho Falls BLM-
116 AM MDT Sun Sep 20 2026
.Today...
* Sky/weather........Mostly sunny.
* Chc of thunder.....0 percent.
* Max Temperature....62-69.
24 hr trend......6 degrees up.
* Min Humidity.......39-47 percent.
24 hr trend......7 percent down.
* 20ft winds.........Northeast winds around 4 mph shifting to the
southwest 4 to 5 mph in the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......5250-6250 ft AGL.
* Transport Winds....Light winds.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....36-42.
24 hr trend......Little change.
* Max Humidity.......85-93 percent.
24 hr trend......6 percent down.
* 20ft winds.........Southeast winds around 4 mph shifting to the
northeast 4 to 6 mph after midnight.
* Chc Wetting Rain...0 percent.
* Mixing Height......300-1300 ft AGL.
* Transport Winds....Light winds.
.MONDAY...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....67-74.
24 hr trend......5 degrees up.
* Min Humidity.......28-36 percent.
24 hr trend......11 percent down.
* 20ft winds.........Northeast winds 4 to 6 mph shifting to the
southeast in the afternoon. Gusts up to 15
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......6000-7000 ft AGL.
* Transport Winds....Light winds becoming southwest around 10 mph
in the afternoon.
.Forecast days 3 through 7......
.TUESDAY...Partly cloudy. Lows 40 to 46. Highs 69 to 76.
Northeast winds 10 to 15 mph with gusts to around 20 mph.
.WEDNESDAY...Partly cloudy. Slight chance of rain. Lows 43 to 48.
Highs 70 to 77. South winds 10 to 15 mph with gusts to around
20 mph.
.THURSDAY...Mostly clear. Lows 42 to 48. Highs 73 to 80.
Southeast winds 10 to 15 mph with gusts to around 20 mph.
.FRIDAY...Mostly clear. Lows in the mid 40s. Highs in the upper
70s.
.SATURDAY...Partly cloudy. Lows in the upper 40s. Highs in the
mid 70s.
$$
IDZ411-202230-
Centennial Mountains and Snake River Range/Targhee NF-
116 AM MDT Sun Sep 20 2026
.Today...
* Sky/weather........Partly cloudy.
* Chc of thunder.....0 percent.
* Max Temperature....Around 63 valleys and 53-60 ridges.
24 hr trend......4 degrees up.
* Min Humidity.......42-49 percent valleys and 49-57 percent
ridges.
24 hr trend......8 percent down.
* 20ft winds.........
Valleys/lwr slopes...Light winds becoming west around 4 mph in
the afternoon.
Ridges/upr slopes....Northwest 4 to 5 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......4750-5750 ft AGL.
* Transport Winds....Light winds becoming northwest around 10 mph
in the afternoon.
.TONIGHT...
* Sky/weather........Mostly clear.
* Chc of thunder.....0 percent.
* Min Temperature....33-40.
24 hr trend......2 degrees down.
* Max Humidity.......90-98 percent valleys and 83-91 percent
ridges.
24 hr trend......7 percent down.
* 20ft winds.........
Valleys/lwr slopes...Northeast around 4 mph.
Ridges/upr slopes....Northeast around 4 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......300-1300 ft AGL.
* Transport Winds....Light winds.
.MONDAY...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....Around 71 valleys and 60-67 ridges.
24 hr trend......7 degrees up.
* Min Humidity.......28-35 percent valleys and 34-42 percent
ridges.
24 hr trend......14 percent down.
* 20ft winds.........
Valleys/lwr slopes...Light winds becoming southwest around 4
mph in the afternoon.
Ridges/upr slopes....East around 4 mph shifting to the
southwest 4 to 5 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.
.Forecast days 3 through 7......
.TUESDAY...Mostly clear. Lows 37 to 44. Highs 62 to 69. Southeast
winds 5 to 10 mph with gusts to around 15 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows 40 to 47. Highs 61 to 68. South winds 5 to
10 mph with gusts to around 20 mph.
.THURSDAY...Mostly clear. Lows 39 to 46. Highs 64 to 71.
Southeast winds 10 to 15 mph with gusts to around 25 mph.
.FRIDAY...Mostly clear. Lows in the mid 40s. Highs in the upper
60s.
.SATURDAY...Partly cloudy. Lows in the mid 40s. Highs in the mid
60s.
$$
IDZ413-202230-
Caribou Range/Caribou NF-
116 AM MDT Sun Sep 20 2026
.Today...
* Sky/weather........Mostly sunny.
* Chc of thunder.....0 percent.
* Max Temperature....63-70 valleys and 56-63 ridges.
24 hr trend......5 degrees up.
* Min Humidity.......37-45 percent valleys and 42-50 percent
ridges.
24 hr trend......6 percent down.
* 20ft winds.........
Valleys/lwr slopes...Light winds becoming northwest 4 to 5 mph
in the afternoon.
Ridges/upr slopes....Light winds becoming northwest 4 to 6 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.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....36-43.
24 hr trend......2 degrees up.
* Max Humidity.......79-87 percent.
24 hr trend......9 percent down.
* 20ft winds.........
Valleys/lwr slopes...Northeast 4 to 5 mph.
Ridges/upr slopes....North 4 to 6 mph with gusts to around 15
mph shifting to the east 4 to 5 mph after
midnight.
* Chc Wetting Rain...0 percent.
* Mixing Height......300-1300 ft AGL.
* Transport Winds....Light winds.
.MONDAY...
* Sky/weather........Mostly sunny.
* Chc of thunder.....0 percent.
* Max Temperature....69-76 valleys and 61-68 ridges.
24 hr trend......6 degrees up.
* Min Humidity.......26-34 percent valleys and 30-38 percent
ridges.
24 hr trend......12 percent down.
* 20ft winds.........
Valleys/lwr slopes...East around 4 mph shifting to the south in
the afternoon.
Ridges/upr slopes....Southeast 4 to 5 mph shifting to the
southwest in the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......6750-7750 ft AGL.
* Transport Winds....Light winds becoming southwest around 10 mph
in the afternoon.
.Forecast days 3 through 7......
.TUESDAY...Partly cloudy. Lows 41 to 48. Highs 67 to 74.
Southeast winds 5 to 10 mph with gusts to around 20 mph.
.WEDNESDAY...Partly cloudy. Chance of showers and slight chance
of thunderstorms. Lows 42 to 49. Highs 68 to 75. South winds
10 to 15 mph with gusts to around 20 mph.
.THURSDAY...Clear. Lows 42 to 49. Highs 71 to 78. Southeast winds
10 to 15 mph with gusts to around 20 mph.
.FRIDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
70s.
.SATURDAY...Mostly clear. Lows in the upper 40s. Highs in the
lower 70s.
$$
.OUTLOOK FOR SUNDAY SEPTEMBER 27 THROUGH SATURDAY OCTOBER 3...
Above normal temperatures and precipitation.
$$