Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pocatello, ID
Issued by NWS Pocatello, ID
201
FNUS55 KPIH 210754
FWFPIH
Fire Weather Planning Forecast for Southeast Idaho
National Weather Service Pocatello ID
154 AM 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.
IDZ475-212215-
East Salmon River Mountains/Salmon NF-
154 AM MDT Mon Sep 21 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....66-73 valleys and 57-64 ridges.
24 hr trend......4 degrees up.
* Min Humidity.......27-35 percent valleys and 31-39 percent
ridges.
24 hr trend......2 percent down.
* 20ft winds.........
Valleys/lwr slopes...South 4 to 5 mph.
Ridges/upr slopes....South 4 to 5 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......7000-8000 ft AGL.
* Transport Winds....Light winds.
.TONIGHT...
* Sky/weather........Partly cloudy.
* Chc of thunder.....0 percent.
* Min Temperature....41-48.
24 hr trend......4 degrees up.
* Max Humidity.......58-66 percent.
24 hr trend......8 percent down.
* 20ft winds.........
Valleys/lwr slopes...South around 4 mph.
Ridges/upr slopes....South 4 to 5 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......100-1100 ft AGL.
* Transport Winds....Light winds.
.TUESDAY...
* Sky/weather........Mostly cloudy.
* Chc of thunder.....0 percent.
* Max Temperature....65-72 valleys and 56-63 ridges.
24 hr trend......Little change.
* Min Humidity.......28-36 percent valleys and 33-41 percent
ridges.
24 hr trend......2 percent up.
* 20ft winds.........
Valleys/lwr slopes...Light winds becoming southwest 4 to 5 mph
in the afternoon.
Ridges/upr slopes....Southwest 4 to 6 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......8500-9500 ft AGL.
* Transport Winds....Light winds becoming southwest around 10 mph
in the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Mostly clear. Lows 41 to 48. Highs 63 to 70. South
winds 5 to 10 mph with gusts to around 20 mph.
.THURSDAY...Mostly clear. Lows 43 to 50. 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 35 mph.
.SATURDAY...Partly cloudy with slight chance of rain. Lows in the
lower 40s. Highs in the mid 50s.
.SUNDAY...Partly cloudy. Lows in the upper 30s. Highs in the
upper 50s.
$$
IDZ476-212215-
Lemhi and Lost River Range/Challis NF-
154 AM MDT Mon Sep 21 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....64-71 valleys and 54-61 ridges.
24 hr trend......4 degrees up.
* Min Humidity.......32-40 percent valleys and 42-50 percent
ridges.
24 hr trend......Little change.
* 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......6000-7000 ft AGL.
* Transport Winds....Light winds.
.TONIGHT...
* Sky/weather........Partly cloudy.
* Chc of thunder.....0 percent.
* Min Temperature....39-46.
24 hr trend......3 degrees up.
* Max Humidity.......65-73 percent.
24 hr trend......8 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......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....65-72 valleys and 54-61 ridges.
24 hr trend......Little change.
* Min Humidity.......34-42 percent valleys and 41-49 percent
ridges.
24 hr trend......Little change.
* 20ft winds.........
Valleys/lwr slopes...South 4 to 6 mph.
Ridges/upr slopes....South 4 to 6 mph. Gusts up to 15 mph in
the afternoon.
* Chc Wetting Rain...10 percent.
* Mixing Height......7000-8000 ft AGL.
* Transport Winds....Light winds becoming southwest around 10 mph
in the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Mostly clear. Chance of rain. Lows 39 to 46. Highs
62 to 69. Southwest winds 5 to 10 mph with gusts to around
20 mph.
.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. Partly cloudy. Lows 43 to 50. Highs 62 to 69.
South winds 15 to 25 mph with gusts to around 35 mph.
.SATURDAY...Partly cloudy with slight chance of rain. Lows in the
lower 40s. Highs around 60.
.SUNDAY...Partly cloudy. Lows around 40. Highs in the upper 50s.
$$
IDZ422-212215-
Sawtooth Range/Northern Sawtooth NF-
154 AM MDT Mon Sep 21 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....66-73 valleys and 56-63 ridges.
24 hr trend......2 degrees up.
* Min Humidity.......31-39 percent valleys and 36-44 percent
ridges.
24 hr trend......2 percent down.
* 20ft winds.........
Valleys/lwr slopes...Northeast 4 to 7 mph shifting to the
southeast in the afternoon.
Ridges/upr slopes....South 4 to 6 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......7000-8000 ft AGL.
* Transport Winds....Light winds.
.TONIGHT...
* Sky/weather........Partly cloudy then becoming mostly cloudy.
* Chc of thunder.....0 percent.
* Min Temperature....40-47.
24 hr trend......4 degrees up.
* Max Humidity.......63-71 percent.
24 hr trend......13 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......100-1100 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....66-73 valleys and 55-62 ridges.
24 hr trend......Little change.
* Min Humidity.......33-41 percent valleys and 38-46 percent
ridges.
24 hr trend......3 percent up.
* 20ft winds.........
Valleys/lwr slopes...East 4 to 6 mph shifting to the south in
the afternoon.
Ridges/upr slopes....South 4 to 6 mph.
* Chc Wetting Rain...10 percent.
* Mixing Height......7750-8750 ft AGL.
* Transport Winds....Light winds becoming south around 10 mph in
the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Mostly clear. Lows 39 to 46. Highs 63 to 70.
Southwest winds 5 to 10 mph with gusts to around 15 mph.
.THURSDAY...Mostly clear. Lows 41 to 48. Highs 66 to 73.
Southeast winds 10 to 15 mph with gusts to around 20 mph.
.FRIDAY...Partly cloudy. Lows 43 to 50. Highs 62 to 69. South
winds 10 to 20 mph with gusts to around 30 mph.
.SATURDAY...Partly cloudy with slight chance of rain. Lows in the
lower 40s. Highs around 60.
.SUNDAY...Partly cloudy. Lows in the upper 30s. Highs around 60.
$$
IDZ425-212215-
Middle Snake River Valley/Twin Falls BLM north of the Snake River-
154 AM MDT Mon Sep 21 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....73-78.
24 hr trend......4 degrees up.
* Min Humidity.......29-37 percent.
24 hr trend......3 percent down.
* 20ft winds.........East winds 6 to 11 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......6000-7000 ft AGL.
* Transport Winds....East around 10 mph.
.TONIGHT...
* Sky/weather........Partly cloudy then becoming mostly cloudy.
* Chc of thunder.....0 percent.
* Min Temperature....46-51.
24 hr trend......4 degrees up.
* Max Humidity.......68-76 percent.
24 hr trend......17 percent down.
* 20ft winds.........Northeast winds 4 to 9 mph with gusts to
around 15 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......200-1200 ft AGL.
* Transport Winds....East around 10 mph.
.TUESDAY...
* Sky/weather........Mostly cloudy.
* Chc of thunder.....0 percent.
* Max Temperature....Around 76.
24 hr trend......Little change.
* Min Humidity.......33-41 percent.
24 hr trend......2 percent up.
* 20ft winds.........East winds 4 to 9 mph with gusts to around 15
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......7500-8500 ft AGL.
* Transport Winds....East around 10 mph shifting to the south in
the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Mostly clear. Lows in the upper 40s. Highs in the
upper 70s. East winds 5 to 10 mph with gusts to around 15 mph.
.THURSDAY...Clear. Lows around 50. Highs 80 to 85. East winds
10 to 15 mph with gusts to around 20 mph.
.FRIDAY...Mostly clear. Lows 50 to 55. Highs around 80. Southeast
winds 10 to 20 mph with gusts to around 30 mph.
.SATURDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
70s.
.SUNDAY...Partly cloudy. Lows in the mid 40s. Highs in the mid
70s.
$$
IDZ427-212215-
Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls
BLM south of the Snake River-
154 AM MDT Mon Sep 21 2026
.Today...
* Sky/weather........Mostly sunny.
* Chc of thunder.....0 percent.
* Max Temperature....70-77.
24 hr trend......5 degrees up.
* Min Humidity.......26-34 percent.
24 hr trend......3 percent down.
* 20ft winds.........
Valleys/lwr slopes...Southeast 4 to 8 mph.
Ridges/upr slopes....Southeast 4 to 8 mph with gusts to around
15 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......7750-8750 ft AGL.
* Transport Winds....Light winds becoming south around 10 mph in
the afternoon.
.TONIGHT...
* Sky/weather........Mostly cloudy.
* Chc of thunder.....0 percent.
* Min Temperature....47-54.
24 hr trend......6 degrees up.
* Max Humidity.......59-67 percent valleys and 48-56 percent
ridges.
24 hr trend......15 percent down.
* 20ft winds.........
Valleys/lwr slopes...Southeast 4 to 8 mph.
Ridges/upr slopes....Southeast 4 to 9 mph with gusts to around
15 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......100-1100 ft AGL.
* Transport Winds....Southeast around 10 mph.
.TUESDAY...
* Sky/weather........Cloudy. Chance of rain showers and slight
chance of thunderstorms in the afternoon.
* Chc of thunder.....20 percent.
* Max Temperature....66-73.
24 hr trend......3 degrees down.
* Min Humidity.......35-43 percent.
24 hr trend......11 percent up.
* 20ft winds.........
Valleys/lwr slopes...South 4 to 8 mph.
Ridges/upr slopes....South 4 to 8 mph with gusts to around 15
mph.
* Chc Wetting Rain...20 percent.
* Mixing Height......7250-8250 ft AGL.
* Transport Winds....South around 10 mph.
.Forecast days 3 through 7......
.WEDNESDAY...Mostly clear. Lows 44 to 51. Highs 72 to 79. South
winds 5 to 10 mph with gusts to around 15 mph.
.THURSDAY...Clear. Lows 48 to 55. Highs 75 to 82. Southeast winds
10 to 20 mph with gusts to around 25 mph.
.FRIDAY...Breezy. Mostly clear. Lows 50 to 57. Highs 73 to 80.
South winds 15 to 25 mph with gusts to around 35 mph.
.SATURDAY...Mostly clear. Lows in the upper 40s. Highs in the
lower 70s.
.SUNDAY...Partly cloudy. Lows in the mid 40s. Highs in the lower
70s.
$$
IDZ410-212215-
Upper Snake River Valley/Idaho Falls BLM-
154 AM MDT Mon Sep 21 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....66-72.
24 hr trend......4 degrees up.
* Min Humidity.......36-44 percent.
24 hr trend......Little change.
* 20ft winds.........Northeast winds 4 to 6 mph shifting to the
south in the afternoon. Gusts up to 15 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......6000-7000 ft AGL.
* Transport Winds....Light winds.
.TONIGHT...
* Sky/weather........Partly cloudy.
* Chc of thunder.....0 percent.
* Min Temperature....40-46.
24 hr trend......4 degrees up.
* Max Humidity.......75-83 percent.
24 hr trend......14 percent down.
* 20ft winds.........Northeast winds 4 to 6 mph. Gusts up to 15 mph
after midnight.
* Chc Wetting Rain...0 percent.
* Mixing Height......300-1300 ft AGL.
* Transport Winds....Light winds.
.TUESDAY...
* Sky/weather........Mostly cloudy.
* Chc of thunder.....0 percent.
* Max Temperature....67-73.
24 hr trend......Little change.
* Min Humidity.......35-43 percent.
24 hr trend......Little change.
* 20ft winds.........East winds 4 to 6 mph shifting to the
southwest in the afternoon. Gusts up to 15
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......6500-7500 ft AGL.
* Transport Winds....East around 10 mph shifting to the south in
the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Mostly clear. Slight chance of rain. Lows 42 to 47.
Highs 69 to 76. South winds 5 to 10 mph with gusts to around
15 mph.
.THURSDAY...Clear. Lows 43 to 48. Highs 72 to 79. East winds
10 to 15 mph with gusts to around 20 mph.
.FRIDAY...Mostly clear. Lows 45 to 51. Highs 71 to 78. South
winds 10 to 15 mph with gusts to around 30 mph.
.SATURDAY...Partly cloudy. Lows in the mid 40s. Highs in the
lower 70s.
.SUNDAY...Partly cloudy. Lows in the lower 40s. Highs around 70.
$$
IDZ411-212215-
Centennial Mountains and Snake River Range/Targhee NF-
154 AM MDT Mon Sep 21 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....Around 69 valleys and 59-66 ridges.
24 hr trend......6 degrees up.
* Min Humidity.......32-39 percent valleys and 40-48 percent
ridges.
24 hr trend......8 percent down.
* 20ft winds.........
Valleys/lwr slopes...East around 4 mph in the morning becoming
light.
Ridges/upr slopes....East 4 to 5 mph shifting to the southwest
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........Mostly clear.
* Chc of thunder.....0 percent.
* Min Temperature....37-44.
24 hr trend......3 degrees up.
* Max Humidity.......84-92 percent valleys and 72-80 percent
ridges.
24 hr trend......13 percent down.
* 20ft winds.........
Valleys/lwr slopes...Light winds becoming northeast around 4
mph after midnight.
Ridges/upr slopes....South around 4 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.
.TUESDAY...
* Sky/weather........Mostly cloudy.
* Chc of thunder.....0 percent.
* Max Temperature....Around 70 valleys and 59-66 ridges.
24 hr trend......Little change.
* Min Humidity.......31-39 percent valleys and 37-45 percent
ridges.
24 hr trend......2 percent down.
* 20ft winds.........
Valleys/lwr slopes...East 4 to 5 mph shifting to the southwest
in the afternoon.
Ridges/upr slopes....Southeast 4 to 5 mph shifting to the
southwest 4 to 6 mph with gusts to around
15 mph in the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......6250-7250 ft AGL.
* Transport Winds....Light winds becoming southwest around 10 mph
in the afternoon.
.Forecast days 3 through 7......
.WEDNESDAY...Partly cloudy. Chance of showers and slight chance
of thunderstorms. Lows 39 to 46. Highs 59 to 66. South winds 5 to
10 mph with gusts to around 20 mph.
.THURSDAY...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 42 to 49. Highs 63 to 70. Southeast
winds 10 to 20 mph with gusts to around 30 mph.
.SATURDAY...Partly cloudy. Lows in the mid 40s. Highs in the
lower 60s.
.SUNDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the lower 40s. Highs in the lower 60s.
$$
IDZ413-212215-
Caribou Range/Caribou NF-
154 AM MDT Mon Sep 21 2026
.Today...
* Sky/weather........Mostly sunny.
* Chc of thunder.....0 percent.
* Max Temperature....68-75 valleys and 61-67 ridges.
24 hr trend......5 degrees up.
* Min Humidity.......28-36 percent valleys and 32-40 percent
ridges.
24 hr trend......5 percent down.
* 20ft winds.........
Valleys/lwr slopes...East around 4 mph shifting to the south in
the afternoon.
Ridges/upr slopes....Southeast 4 to 6 mph shifting to the
southwest 4 to 5 mph in the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......6000-7000 ft AGL.
* Transport Winds....Light winds.
.TONIGHT...
* Sky/weather........Partly cloudy.
* Chc of thunder.....0 percent.
* Min Temperature....41-48.
24 hr trend......6 degrees up.
* Max Humidity.......62-70 percent.
24 hr trend......19 percent down.
* 20ft winds.........
Valleys/lwr slopes...Southeast 4 to 5 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........Cloudy. Slight chance of rain in the morning.
Chance of rain showers and slight chance of
thunderstorms in the afternoon.
* Chc of thunder.....20 percent.
* Max Temperature....66-73 valleys and 59-66 ridges.
24 hr trend......2 degrees down.
* Min Humidity.......42-50 percent.
24 hr trend......12 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 shifting to the southwest with gusts
to around 15 mph in the afternoon.
* Chc Wetting Rain...20 percent.
* Mixing Height......6250-7250 ft AGL.
* Transport Winds....South around 10 mph.
.Forecast days 3 through 7......
.WEDNESDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows 41 to 48. Highs 67 to 74. South winds 5 to
10 mph with gusts to around 15 mph.
.THURSDAY...Clear. Lows 42 to 49. Highs 70 to 77. Southeast winds
10 to 15 mph with gusts to around 20 mph.
.FRIDAY...Mostly clear. Lows 45 to 52. Highs 70 to 77. South
winds 10 to 15 mph with gusts to around 30 mph.
.SATURDAY...Mostly clear. Lows in the upper 40s. Highs around 70.
.SUNDAY...Partly cloudy with slight chance of rain. Lows in the
mid 40s. Highs in the upper 60s.
$$
.OUTLOOK FOR MONDAY SEPTEMBER 28 THROUGH SUNDAY OCTOBER 4...
Above normal temperatures and precipitation.
$$