Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pocatello, ID
Issued by NWS Pocatello, ID
743
FNUS55 KPIH 050845
FWFPIH
Fire Weather Planning Forecast for Southeast Idaho
National Weather Service Pocatello ID
245 AM MDT Sat Sep 5 2026
.DISCUSSION...
* Central Idaho Dispatch Area weather impact summary (Zones 475
and 476)...
Morning rain across the Sawtooths and northern zones will break
briefly this afternoon before isolated showers return late
tonight. Sunday daylight hours remain dry, with valley highs in
the mid-to-upper 70s. A surge of moisture late Sunday night
through Monday morning will bring light wetting rain (0.10" to
0.30" QPF). Highs drop into the 60s on Monday, with excellent
overnight RH recoveries as Tuesday morning lows fall into the 30s.
Temperatures recover back into the 70s by Wednesday.
* East Idaho Dispatch Area weather impact summary (Zones 410...411
and 413)...
Warm and dry conditions will prevail through Sunday afternoon,
with Snake Plain highs reaching the lower 80s and minimum RH
values holding between 15% and 25%. Southerly afternoon winds of
15 to 25 mph on Sunday will precede rain showers arriving late
Sunday evening and overnight. Rain clears by early Monday
afternoon, leaving daytime highs in the 60s and 70s and overnight
lows in the 30s and 40s. Zonal flow mid-week brings a return to
the upper 70s and lower 80s.
* South Central Idaho Dispatch Area weather impact summary (Zones
422...425 and 427)...
Dry and warm conditions continue today and Sunday, with Magic
Valley highs in the lower 80s and minimum RH dropping into the 20%
to 30% range. Shower chances increase late Sunday evening through
Monday morning, bringing light wetting rain. Monday turns cool
with highs in the 60s and 70s before clearing skies drop overnight
lows into the 40s. Near-normal temperatures in the upper 70s and
lower 80s return by Wednesday.
IDZ475-052215-
East Salmon River Mountains/Salmon NF-
245 AM MDT Sat Sep 5 2026
.Today...
* Sky/weather........Mostly cloudy then becoming partly cloudy.
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....65-72 valleys and 56-63 ridges.
24 hr trend......6 degrees up.
* Min Humidity.......35-43 percent.
24 hr trend......4 percent down.
* 20ft winds.........
Valleys/lwr slopes...South 4 to 8 mph.
Ridges/upr slopes....South 4 to 9 mph. Gusts up to 20 mph in
the afternoon.
* Chc Wetting Rain...20 percent.
* Mixing Height......7000-8000 ft AGL.
* Transport Winds....Light winds becoming south around 15 mph in
the afternoon.
.TONIGHT...
* Sky/weather........Partly cloudy then becoming mostly cloudy.
Slight chance of rain showers in the evening.
Slight chance of thunderstorms through the
night. Chance of rain showers after midnight.
* Chc of thunder.....20 percent.
* Min Temperature....41-48.
24 hr trend......2 degrees up.
* Max Humidity.......71-79 percent.
24 hr trend......9 percent down.
* 20ft winds.........
Valleys/lwr slopes...West 4 to 6 mph shifting to the northeast
around 4 mph after midnight.
Ridges/upr slopes....South 4 to 8 mph. Gusts up to 15 mph in
the evening.
* Chc Wetting Rain...10 percent.
* Mixing Height......100-1100 ft AGL.
* Transport Winds....South around 10 mph in the evening becoming
light.
.SUNDAY...
* Sky/weather........Mostly cloudy. 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....65-72 valleys and 56-63 ridges.
24 hr trend......Little change.
* Min Humidity.......34-42 percent.
24 hr trend......Little change.
* 20ft winds.........
Valleys/lwr slopes...Light winds becoming southwest 4 to 6 mph
in the afternoon.
Ridges/upr slopes....Northwest 4 to 5 mph shifting to the
southwest 4 to 7 mph with gusts to around
15 mph in the afternoon.
* Chc Wetting Rain...30 percent.
* Mixing Height......8250-9250 ft AGL.
* Transport Winds....Light winds becoming south around 10 mph in
the afternoon.
.Forecast days 3 through 7......
.LABOR DAY...Cooler. Showers and slight chance of thunderstorms.
Lows 38 to 45. Highs 47 to 54. West winds 10 to 15 mph with gusts
to around 30 mph.
.TUESDAY...Warmer. Partly cloudy. Chance of rain. Lows 33 to 40.
Highs 60 to 67. Southwest winds 10 to 15 mph with gusts to around
20 mph.
.WEDNESDAY...Mostly clear. Lows 38 to 45. Highs 65 to 72.
Southwest winds 5 to 10 mph with gusts to around 15 mph.
.THURSDAY...Partly cloudy with slight chance of rain. Lows in the
mid 40s. Highs in the upper 60s.
.FRIDAY...Partly cloudy with chance of rain. Lows in the upper
40s. Highs in the mid 60s.
$$
IDZ476-052215-
Lemhi and Lost River Range/Challis NF-
245 AM MDT Sat Sep 5 2026
.Today...
* Sky/weather........Mostly sunny.
* Chc of thunder.....0 percent.
* Max Temperature....68-75 valleys and 57-64 ridges.
24 hr trend......5 degrees up.
* Min Humidity.......28-36 percent.
24 hr trend......3 percent down.
* 20ft winds.........
Valleys/lwr slopes...South 11 to 16 mph.
Ridges/upr slopes....South 11 to 16 mph. Gusts up to 15 mph
increasing to 25 mph in the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......8500-9500 ft AGL.
* Transport Winds....Light winds becoming south around 20 mph in
the afternoon.
.TONIGHT...
* Sky/weather........Mostly clear. Slight chance of rain after
midnight.
* Chc of thunder.....0 percent.
* Min Temperature....41-48.
24 hr trend......3 degrees up.
* Max Humidity.......62-70 percent valleys and 55-63 percent
ridges.
24 hr trend......18 percent down.
* 20ft winds.........
Valleys/lwr slopes...South 9 to 14 mph.
Ridges/upr slopes....South 9 to 14 mph. Gusts up to 25 mph in
the evening.
* Chc Wetting Rain...0 percent.
* Mixing Height......300-1300 ft AGL.
* Transport Winds....South around 10 mph in the evening becoming
light.
.SUNDAY...
* Sky/weather........Partly cloudy.
* Chc of thunder.....0 percent.
* Max Temperature....68-75 valleys and 58-65 ridges.
24 hr trend......Little change.
* Min Humidity.......24-32 percent.
24 hr trend......4 percent down.
* 20ft winds.........
Valleys/lwr slopes...Southeast 4 to 6 mph shifting to the south
11 to 16 mph in the afternoon.
Ridges/upr slopes....South 12 to 17 mph. Gusts up to 20 mph
increasing to 30 mph in the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......10250-11250 ft AGL.
* Transport Winds....South around 10 mph increasing to around 20
mph in the afternoon.
.Forecast days 3 through 7......
.LABOR DAY...Cooler, breezy. Mostly cloudy. Chance of showers and
slight chance of thunderstorms. Lows 39 to 46. Highs 49 to 56.
Southwest winds 15 to 25 mph with gusts to around 35 mph.
.TUESDAY...Mostly clear. Lows 31 to 38. Highs 58 to 65. West
winds 10 to 20 mph with gusts to around 30 mph.
.WEDNESDAY...Partly cloudy. Lows 38 to 45. Highs 64 to 71.
Southwest winds 5 to 10 mph with gusts to around 20 mph.
.THURSDAY...Partly cloudy with slight chance of rain. Lows in the
mid 40s. Highs in the upper 60s.
.FRIDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 60s.
$$
IDZ422-052215-
Sawtooth Range/Northern Sawtooth NF-
245 AM MDT Sat Sep 5 2026
.Today...
* Sky/weather........Mostly sunny.
* Chc of thunder.....0 percent.
* Max Temperature....67-74 valleys and 55-62 ridges.
24 hr trend......7 degrees up.
* Min Humidity.......23-31 percent valleys and 33-41 percent
ridges.
24 hr trend......9 percent down.
* 20ft winds.........
Valleys/lwr slopes...South 6 to 11 mph.
Ridges/upr slopes....South 7 to 12 mph with gusts to around 20
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......7000-8000 ft AGL.
* Transport Winds....Light winds becoming south around 20 mph in
the afternoon.
.TONIGHT...
* Sky/weather........Partly cloudy. Chance of rain showers and
slight chance of thunderstorms after midnight.
* Chc of thunder.....20 percent.
* Min Temperature....40-47.
24 hr trend......3 degrees up.
* Max Humidity.......60-68 percent.
24 hr trend......19 percent down.
* 20ft winds.........
Valleys/lwr slopes...Southwest 4 to 7 mph shifting to the north
5 to 8 mph after midnight.
Ridges/upr slopes....South 4 to 9 mph. Gusts up to 20 mph in
the evening.
* Chc Wetting Rain...10 percent.
* Mixing Height......100-1100 ft AGL.
* Transport Winds....South around 10 mph in the evening becoming
light.
.SUNDAY...
* Sky/weather........Partly cloudy then becoming mostly sunny.
Slight chance of showers and thunderstorms in
the afternoon.
* Chc of thunder.....0 percent.
* Max Temperature....68-75 valleys and 56-63 ridges.
24 hr trend......Little change.
* Min Humidity.......20-28 percent valleys and 28-36 percent
ridges.
24 hr trend......4 percent down.
* 20ft winds.........
Valleys/lwr slopes...East 4 to 6 mph shifting to the south 5 to
10 mph in the afternoon.
Ridges/upr slopes....South 7 to 12 mph with gusts to around 20
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......10250-11250 ft AGL.
* Transport Winds....South 10 to 15 mph.
.Forecast days 3 through 7......
.LABOR DAY...Cooler, breezy. Mostly cloudy. Chance of showers and
slight chance of thunderstorms. Lows 37 to 44. Highs 49 to 56.
Southwest winds 15 to 25 mph with gusts to around 35 mph.
.TUESDAY...Clear. Lows 30 to 37. Highs 59 to 66. West winds 10 to
20 mph with gusts to around 30 mph.
.WEDNESDAY...Partly cloudy. Lows 37 to 44. Highs 65 to 72.
Southwest winds 5 to 10 mph with gusts to around 20 mph.
.THURSDAY...Partly cloudy with slight chance of rain. Lows in the
mid 40s. Highs in the upper 60s.
.FRIDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
$$
IDZ425-052215-
Middle Snake River Valley/Twin Falls BLM north of the Snake River-
245 AM MDT Sat Sep 5 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....Around 81.
24 hr trend......6 degrees up.
* Min Humidity.......24-32 percent.
24 hr trend......6 percent down.
* 20ft winds.........South winds 4 to 7 mph. Gusts up to 20 mph in
the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......9250-10250 ft AGL.
* Transport Winds....Light winds becoming south around 10 mph in
the afternoon.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....Around 47.
24 hr trend......2 degrees up.
* Max Humidity.......76-84 percent.
24 hr trend......14 percent down.
* 20ft winds.........West winds 4 to 7 mph with gusts to around 15
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......100-1100 ft AGL.
* Transport Winds....Southwest around 10 mph.
.SUNDAY...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....Around 81.
24 hr trend......Little change.
* Min Humidity.......21-29 percent.
24 hr trend......3 percent down.
* 20ft winds.........South winds 5 to 10 mph. Gusts up to 20 mph in
the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......10500-11500 ft AGL.
* Transport Winds....Light winds becoming south around 10 mph in
the afternoon.
.Forecast days 3 through 7......
.LABOR DAY...Cooler, breezy. Partly cloudy. Chance of rain. Lows
in the upper 40s. Highs in the upper 60s. Southwest winds 15 to
25 mph with gusts to around 35 mph.
.TUESDAY...Clear. Lows in the lower 40s. Highs in the mid 70s.
West winds 10 to 20 mph with gusts to around 35 mph.
.WEDNESDAY...Partly cloudy. Lows in the upper 40s. Highs around
80. Northeast winds 5 to 10 mph with gusts to around 20 mph.
.THURSDAY...Partly cloudy. Lows in the lower 50s. Highs in the
lower 80s.
.FRIDAY...Partly cloudy with slight chance of showers. Lows in
the lower 50s. Highs around 80.
$$
IDZ427-052215-
Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls
BLM south of the Snake River-
245 AM MDT Sat Sep 5 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....Around 80 valleys and 71-78 ridges.
24 hr trend......4 degrees up.
* Min Humidity.......18-26 percent.
24 hr trend......7 percent down.
* 20ft winds.........
Valleys/lwr slopes...Northeast 4 to 5 mph shifting to the south
10 to 15 mph in the afternoon.
Ridges/upr slopes....Southeast 4 to 6 mph with gusts to around
15 mph shifting to the south 10 to 15 mph
with gusts to around 25 mph in the
afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......9500-10500 ft AGL.
* Transport Winds....Southeast around 10 mph increasing to south
around 20 mph in the afternoon.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....46-53.
24 hr trend......4 degrees up.
* Max Humidity.......64-72 percent valleys and 50-58 percent
ridges.
24 hr trend......21 percent down.
* 20ft winds.........
Valleys/lwr slopes...Southwest 8 to 13 mph.
Ridges/upr slopes....Southwest 8 to 13 mph. Gusts up to 25 mph
in the evening.
* Chc Wetting Rain...0 percent.
* Mixing Height......100-1100 ft AGL.
* Transport Winds....South around 10 mph.
.SUNDAY...
* Sky/weather........Mostly sunny.
* Chc of thunder.....0 percent.
* Max Temperature....73-80.
24 hr trend......Little change.
* Min Humidity.......18-26 percent.
24 hr trend......Little change.
* 20ft winds.........
Valleys/lwr slopes...South 4 to 6 mph shifting to the southwest
12 to 17 mph in the afternoon.
Ridges/upr slopes....South 12 to 17 mph. Gusts up to 20 mph
increasing to 30 mph in the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......11250-12250 ft AGL.
* Transport Winds....South 10 to 15 mph.
.Forecast days 3 through 7......
.LABOR DAY...Cooler, breezy. Showers likely and slight chance of
thunderstorms. Lows 44 to 51. Highs 61 to 68. West winds 15 to
25 mph with gusts to around 35 mph.
.TUESDAY...Clear. Lows 38 to 45. Highs 67 to 74. West winds 10 to
20 mph with gusts to around 25 mph.
.WEDNESDAY...Partly cloudy. Lows 46 to 53. Highs 72 to 79.
Southeast winds 5 to 10 mph with gusts to around 20 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
.FRIDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the mid 70s.
$$
IDZ410-052215-
Upper Snake River Valley/Idaho Falls BLM-
245 AM MDT Sat Sep 5 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....73-80.
24 hr trend......4 degrees up.
* Min Humidity.......18-26 percent.
24 hr trend......4 percent down.
* 20ft winds.........South winds 6 to 11 mph with gusts to around
20 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......9750-10750 ft AGL.
* Transport Winds....South around 10 mph increasing to around 20
mph in the afternoon.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....47-54.
24 hr trend......2 degrees up.
* Max Humidity.......54-62 percent.
24 hr trend......19 percent down.
* 20ft winds.........South winds 6 to 11 mph shifting to the east 6
to 9 mph after midnight. Gusts up to 25 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......300-1300 ft AGL.
* Transport Winds....Southeast around 10 mph.
.SUNDAY...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....75-82.
24 hr trend......Little change.
* Min Humidity.......16-24 percent.
24 hr trend......Little change.
* 20ft winds.........South winds 9 to 14 mph with gusts to around
25 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......11250-12250 ft AGL.
* Transport Winds....South around 10 mph increasing to around 20
mph in the afternoon.
.Forecast days 3 through 7......
.LABOR DAY...Cooler, breezy. Showers and slight chance of
thunderstorms. Lows 46 to 51. Highs 60 to 67. South winds 15 to
25 mph with gusts to around 40 mph.
.TUESDAY...Breezy, clear. Lows 37 to 42. Highs 64 to 71.
Southwest winds 15 to 25 mph with gusts to around 35 mph.
.WEDNESDAY...Partly cloudy. Lows 40 to 46. Highs 71 to 78.
Northeast winds 5 to 10 mph with gusts to around 20 mph.
.THURSDAY...Partly cloudy. Lows in the upper 40s. Highs in the
mid 70s.
.FRIDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows around 50. Highs in the mid 70s.
$$
IDZ411-052215-
Centennial Mountains and Snake River Range/Targhee NF-
245 AM MDT Sat Sep 5 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....73-78 valleys and 65-72 ridges.
24 hr trend......2 degrees up.
* Min Humidity.......21-29 percent.
24 hr trend......2 percent down.
* 20ft winds.........
Valleys/lwr slopes...South 7 to 12 mph.
Ridges/upr slopes....South 7 to 12 mph. Gusts up to 15 mph
increasing to 25 mph in the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......9250-10250 ft AGL.
* Transport Winds....South around 10 mph increasing to around 20
mph in the afternoon.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....45-52.
24 hr trend......Little change.
* Max Humidity.......57-65 percent valleys and 44-52 percent
ridges.
24 hr trend......8 percent down.
* 20ft winds.........
Valleys/lwr slopes...Southeast 4 to 6 mph shifting to the east
4 to 7 mph after midnight.
Ridges/upr slopes....Southeast 5 to 10 mph with gusts to around
25 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......300-1300 ft AGL.
* Transport Winds....South around 10 mph.
.SUNDAY...
* Sky/weather........Mostly sunny.
* Chc of thunder.....0 percent.
* Max Temperature....Around 76 valleys and 65-72 ridges.
24 hr trend......Little change.
* Min Humidity.......22-30 percent.
24 hr trend......Little change.
* 20ft winds.........
Valleys/lwr slopes...South 8 to 13 mph.
Ridges/upr slopes....South 9 to 14 mph with gusts to around 25
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......10000-11000 ft AGL.
* Transport Winds....South around 10 mph increasing to around 20
mph in the afternoon.
.Forecast days 3 through 7......
.LABOR DAY...Cooler, breezy. Showers and slight chance of
thunderstorms. Lows 42 to 49. Highs 51 to 58. South winds 15 to
25 mph with gusts to around 35 mph.
.TUESDAY...Clear. Lows 33 to 40. Highs 55 to 62. Southwest winds
10 to 20 mph with gusts to around 35 mph.
.WEDNESDAY...Mostly clear. Lows 37 to 44. Highs 62 to 69.
Southeast winds 5 to 10 mph with gusts to around 20 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 60s.
.FRIDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 60s.
$$
IDZ413-052215-
Caribou Range/Caribou NF-
245 AM MDT Sat Sep 5 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....76-83 valleys and 69-76 ridges.
24 hr trend......2 degrees up.
* Min Humidity.......15-20 percent.
24 hr trend......2 percent down.
* 20ft winds.........
Valleys/lwr slopes...South 9 to 14 mph.
Ridges/upr slopes....South 9 to 14 mph with gusts to around 25
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......9250-10250 ft AGL.
* Transport Winds....South around 10 mph increasing to around 20
mph in the afternoon.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....49-56.
24 hr trend......Little change.
* Max Humidity.......39-47 percent valleys and 34-42 percent
ridges.
24 hr trend......9 percent down.
* 20ft winds.........
Valleys/lwr slopes...South 7 to 12 mph.
Ridges/upr slopes....South 8 to 13 mph with gusts to around 20
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......400-1400 ft AGL.
* Transport Winds....South 10 to 15 mph.
.SUNDAY...
* Sky/weather........Sunny then becoming mostly cloudy.
* Chc of thunder.....0 percent.
* Max Temperature....75-82 valleys and 68-75 ridges.
24 hr trend......Little change.
* Min Humidity.......21-29 percent valleys and 25-33 percent
ridges.
24 hr trend......9 percent up.
* 20ft winds.........
Valleys/lwr slopes...South 11 to 16 mph.
Ridges/upr slopes....South 11 to 16 mph with gusts to around 25
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......9750-10750 ft AGL.
* Transport Winds....South 15 to 20 mph.
.Forecast days 3 through 7......
.LABOR DAY...Cooler. Showers likely and slight chance of
thunderstorms. Lows 46 to 53. Highs 60 to 67. Southwest winds
10 to 20 mph with gusts to around 30 mph.
.TUESDAY...Clear. Lows 37 to 44. Highs 65 to 72. West winds 10 to
20 mph with gusts to around 30 mph.
.WEDNESDAY...Partly cloudy. Lows 42 to 49. Highs 71 to 78. East
winds 5 to 10 mph with gusts to around 20 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows around 50. Highs in the mid 70s.
.FRIDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows around 50. Highs in the lower 70s.
$$
.OUTLOOK FOR September 12th-18th: NEAR AVERAGE temperatures and
ABOVE AVERAGE precipitation.
$$