Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pocatello, ID
Issued by NWS Pocatello, ID
236
FNUS55 KPIH 060830
FWFPIH
Fire Weather Planning Forecast for Southeast Idaho
National Weather Service Pocatello ID
230 AM MDT Sun Sep 6 2026
.DISCUSSION...
* Central Idaho Dispatch Area weather impact summary (Zones 475
and 476)...
Early morning light rain across the Sawtooths will diminish after
sunrise before scattered showers and wet thunderstorms redevelop
late this afternoon and evening. High temperatures in the 70s
today will drop sharply into the 50s and 60s on Labor Day Monday.
Minimum relative humidity values will hold generally above 30%
today, surging overnight as rain clears. Tuesday morning lows in
the 30s will give way to a steady warming trend into the 70s and
80s mid-week under dry conditions.
* East Idaho Dispatch Area weather impact summary (Zones 410...411
and 413)...
Warm temperatures in the upper 70s and lower 80s combined with
increasing southerly winds (gusts 3040 mph) will precede late-
afternoon convective development. Storms arriving after 5:00 PM
will be capable of producing severe downburst wind gusts over 50
mph. Showers exit early Monday morning, leaving cool highs in the
60s. Clearing skies Monday night will drop valley lows into the
40s. Dry, seasonal conditions return Wednesday through Friday with
highs returning to the 80s.
* South Central Idaho Dispatch Area weather impact summary (Zones
422...425 and 427)...
Southerly winds gusting 30 to 35 mph and minimum relative humidity
values of 15% to 25% will characterize the early afternoon.
Scattered thunderstorms arriving after 5:00 PM will pose a threat
for strong, erratic downdraft winds. Convective coverage tapers
off late tonight, followed by noticeably cooler highs in the 60s
and 70s on Labor Day. Excellent overnight RH recoveries are
expected Monday night before dry, warmer weather returns mid-week.
IDZ475-062215-
East Salmon River Mountains/Salmon NF-
230 AM MDT Sun Sep 6 2026
.Today...
* Sky/weather........Mostly cloudy then becoming partly 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....64-71 valleys and 55-62 ridges.
24 hr trend......Little change.
* Min Humidity.......34-42 percent.
24 hr trend......Little change.
* 20ft winds.........
Valleys/lwr slopes...East around 4 mph shifting to the
southwest 4 to 6 mph in the afternoon.
Ridges/upr slopes....South 4 to 8 mph. Gusts up to 15 mph in
the afternoon.
* Chc Wetting Rain...10 percent.
* Mixing Height......8750-9750 ft AGL.
* Transport Winds....Light winds becoming south around 15 mph in
the afternoon.
.TONIGHT...
* Sky/weather........Partly cloudy then becoming mostly cloudy.
Chance of rain showers in the evening. Slight
chance of thunderstorms through the night.
Rain showers after midnight.
* Chc of thunder.....20 percent.
* Min Temperature....38-45.
24 hr trend......3 degrees down.
* Max Humidity.......81-89 percent valleys and 85-93 percent
ridges.
24 hr trend......7 percent up.
* 20ft winds.........
Valleys/lwr slopes...West 4 to 8 mph.
Ridges/upr slopes....West 5 to 10 mph with gusts to around 15
mph.
* Chc Wetting Rain...80 percent.
* Mixing Height......200-1200 ft AGL.
* Transport Winds....West around 10 mph.
.LABOR DAY...
* Sky/weather........Mostly cloudy. Rain showers and chance of snow
in the morning. Slight chance of thunderstorms
through the day. Chance of rain showers in the
afternoon.
* Chc of thunder.....20 percent.
* Max Temperature....48-55.
24 hr trend......13 degrees down.
* Min Humidity.......47-55 percent valleys and 51-59 percent
ridges.
24 hr trend......13 percent up.
* 20ft winds.........
Valleys/lwr slopes...West 6 to 11 mph.
Ridges/upr slopes....West 7 to 12 mph with gusts to around 25
mph.
* Chc Wetting Rain...70 percent.
* Mixing Height......5000-6000 ft AGL.
* Transport Winds....West around 15 mph.
.Forecast days 3 through 7......
.TUESDAY...Warmer, clear. Lows 33 to 40. Highs 59 to 66. West
winds 10 to 15 mph with gusts to around 20 mph.
.WEDNESDAY...Clear. Lows 37 to 44. Highs 65 to 72. West winds
5 to 10 mph with gusts to around 15 mph.
.THURSDAY...Mostly clear. Lows 41 to 48. Highs 66 to 73.
Southwest winds 10 to 15 mph with gusts to around 25 mph.
.FRIDAY...Mostly clear. Slight chance of rain. Lows in the upper
40s. Highs in the mid 60s.
.SATURDAY...Partly cloudy with chance of rain. Lows in the lower
40s. Highs in the lower 60s.
$$
IDZ476-062215-
Lemhi and Lost River Range/Challis NF-
230 AM MDT Sun Sep 6 2026
.Today...
* Sky/weather........Partly cloudy then becoming mostly sunny.
* Chc of thunder.....0 percent.
* Max Temperature....68-75 valleys and 58-65 ridges.
24 hr trend......Little change.
* Min Humidity.......23-31 percent.
24 hr trend......3 percent down.
* 20ft winds.........
Valleys/lwr slopes...South 13 to 18 mph.
Ridges/upr slopes....South 14 to 19 mph. Gusts up to 20 mph
increasing to 30 mph in the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......10000-11000 ft AGL.
* Transport Winds....Light winds becoming south around 20 mph in
the afternoon.
.TONIGHT...
* Sky/weather........Partly cloudy then becoming mostly cloudy.
Rain showers and slight chance of
thunderstorms after midnight.
* Chc of thunder.....20 percent.
* Min Temperature....38-45.
24 hr trend......3 degrees down.
* Max Humidity.......83-91 percent.
24 hr trend......20 percent up.
* 20ft winds.........
Valleys/lwr slopes...South 10 to 15 mph.
Ridges/upr slopes....South 10 to 15 mph with gusts to around 25
mph.
* Chc Wetting Rain...50 percent.
* Mixing Height......300-1300 ft AGL.
* Transport Winds....South 10 to 15 mph.
.LABOR DAY...
* 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....56-63 valleys and 47-54 ridges.
24 hr trend......12 degrees down.
* Min Humidity.......35-43 percent.
24 hr trend......11 percent up.
* 20ft winds.........
Valleys/lwr slopes...West 9 to 14 mph.
Ridges/upr slopes....West 10 to 15 mph with gusts to around 25
mph.
* Chc Wetting Rain...30 percent.
* Mixing Height......7750-8750 ft AGL.
* Transport Winds....West 15 to 20 mph.
.Forecast days 3 through 7......
.TUESDAY...Clear. Lows 32 to 39. Highs 58 to 65. West winds 10 to
20 mph with gusts to around 30 mph.
.WEDNESDAY...Clear. Lows 36 to 43. Highs 65 to 72. West winds
5 to 10 mph with gusts to around 20 mph.
.THURSDAY...Mostly clear. Lows 41 to 48. Highs 67 to 74. West
winds 10 to 15 mph with gusts to around 25 mph.
.FRIDAY...Mostly clear. Slight chance of rain. Lows in the mid
40s. Highs in the upper 60s.
.SATURDAY...Partly cloudy with slight chance of rain. Lows in the
lower 40s. Highs in the lower 60s.
$$
IDZ422-062215-
Sawtooth Range/Northern Sawtooth NF-
230 AM MDT Sun Sep 6 2026
.Today...
* Sky/weather........Partly cloudy then becoming mostly sunny.
* 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......3 percent down.
* 20ft winds.........
Valleys/lwr slopes...South 8 to 13 mph.
Ridges/upr slopes....South 9 to 14 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....Southeast around 10 mph increasing to south
around 20 mph in the afternoon.
.TONIGHT...
* Sky/weather........Partly cloudy then becoming mostly cloudy.
Chance of rain showers and slight chance of
thunderstorms after midnight.
* Chc of thunder.....20 percent.
* Min Temperature....35-42.
24 hr trend......4 degrees down.
* Max Humidity.......85-93 percent.
24 hr trend......25 percent up.
* 20ft winds.........
Valleys/lwr slopes...Southwest 8 to 13 mph.
Ridges/upr slopes....Southwest 8 to 13 mph with gusts to around
20 mph.
* Chc Wetting Rain...40 percent.
* Mixing Height......200-1200 ft AGL.
* Transport Winds....Southwest around 10 mph.
.LABOR DAY...
* Sky/weather........Partly cloudy then becoming mostly sunny.
Slight chance of rain and snow in the morning.
* Chc of thunder.....0 percent.
* Max Temperature....56-63 valleys and 45-52 ridges.
24 hr trend......11 degrees down.
* Min Humidity.......34-42 percent valleys and 44-52 percent
ridges.
24 hr trend......13 percent up.
* 20ft winds.........
Valleys/lwr slopes...Southwest 12 to 17 mph.
Ridges/upr slopes....Southwest 12 to 17 mph with gusts to
around 20 mph.
* Chc Wetting Rain...10 percent.
* Mixing Height......6000-7000 ft AGL.
* Transport Winds....West 15 to 20 mph.
.Forecast days 3 through 7......
.TUESDAY...Clear. Lows 31 to 38. Highs 60 to 67. West winds 10 to
20 mph with gusts to around 30 mph.
.WEDNESDAY...Mostly clear. Lows 37 to 44. Highs 66 to 73. West
winds 10 to 15 mph with gusts to around 20 mph.
.THURSDAY...Mostly clear. Lows 42 to 49. Highs 67 to 74. West
winds 10 to 15 mph with gusts to around 30 mph.
.FRIDAY...Mostly clear. Slight chance of rain. Lows in the mid
40s. Highs in the upper 60s.
.SATURDAY...Partly cloudy with slight chance of rain. Lows in the
lower 40s. Highs in the lower 60s.
$$
IDZ425-062215-
Middle Snake River Valley/Twin Falls BLM north of the Snake River-
230 AM MDT Sun Sep 6 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....Around 81.
24 hr trend......Little change.
* Min Humidity.......20-28 percent.
24 hr trend......3 percent down.
* 20ft winds.........Southeast winds 4 to 6 mph shifting to the
southwest 11 to 16 mph with gusts to around 25
mph in the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......10000-11000 ft AGL.
* Transport Winds....Light winds becoming south around 15 mph in
the afternoon.
.TONIGHT...
* Sky/weather........Partly cloudy. Slight chance of rain showers
in the evening. Chance of rain showers after
midnight.
* Chc of thunder.....0 percent.
* Min Temperature....Around 47.
24 hr trend......Little change.
* Max Humidity.......85-93 percent.
24 hr trend......7 percent up.
* 20ft winds.........Southwest winds 8 to 18 mph with gusts to
around 30 mph.
* Chc Wetting Rain...10 percent.
* Mixing Height......200-1200 ft AGL.
* Transport Winds....Southwest 15 to 20 mph.
.LABOR DAY...
* Sky/weather........Partly cloudy then becoming sunny.
* Chc of thunder.....0 percent.
* Max Temperature....Around 68.
24 hr trend......14 degrees down.
* Min Humidity.......33-41 percent.
24 hr trend......15 percent up.
* 20ft winds.........West winds 10 to 20 mph with gusts to around
35 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......6250-7250 ft AGL.
* Transport Winds....West 20 to 25 mph.
.Forecast days 3 through 7......
.TUESDAY...Breezy, clear. Lows in the lower 40s. Highs in the mid
70s. West winds 15 to 25 mph with gusts to around 30 mph.
.WEDNESDAY...Mostly clear. Lows in the upper 40s. Highs around
80. West winds 5 to 10 mph with gusts to around 20 mph.
.THURSDAY...Mostly clear. Lows in the lower 50s. Highs in the
lower 80s. West winds 10 to 15 mph with gusts to around 30 mph.
.FRIDAY...Mostly clear. Lows in the mid 50s. Highs in the lower
80s.
.SATURDAY...Partly cloudy. Lows in the lower 50s. Highs in the
mid 70s.
$$
IDZ427-062215-
Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls
BLM south of the Snake River-
230 AM MDT Sun Sep 6 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....Around 80 valleys and 71-78 ridges.
24 hr trend......Little change.
* Min Humidity.......15-23 percent.
24 hr trend......Little change.
* 20ft winds.........
Valleys/lwr slopes...South 10 to 20 mph.
Ridges/upr slopes....South 10 to 20 mph. Gusts up to 20 mph
increasing to 30 mph in the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......11000-12000 ft AGL.
* Transport Winds....South around 10 mph increasing to around 20
mph in the afternoon.
.TONIGHT...
* Sky/weather........Mostly cloudy then becoming partly cloudy.
Chance of rain showers and slight chance of
thunderstorms in the evening. Slight chance of
rain after midnight.
* Chc of thunder.....20 percent.
* Min Temperature....43-50.
24 hr trend......4 degrees down.
* Max Humidity.......78-86 percent valleys and 73-81 percent
ridges.
24 hr trend......18 percent up.
* 20ft winds.........
Valleys/lwr slopes...South 15 to 20 mph shifting to the
southwest 14 to 19 mph after midnight.
Ridges/upr slopes....South 15 to 20 mph shifting to the west 14
to 19 mph after midnight. Gusts up to 30
mph.
* Chc Wetting Rain...10 percent.
* Mixing Height......200-1200 ft AGL.
* Transport Winds....South around 20 mph shifting to the west after
midnight.
.LABOR DAY...
* Sky/weather........Partly cloudy then becoming mostly sunny.
* Chc of thunder.....0 percent.
* Max Temperature....Around 68 valleys and 60-67 ridges.
24 hr trend......12 degrees down.
* Min Humidity.......30-38 percent valleys and 26-34 percent
ridges.
24 hr trend......12 percent up.
* 20ft winds.........
Valleys/lwr slopes...West 12 to 17 mph.
Ridges/upr slopes....West 12 to 17 mph with gusts to around 25
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......7750-8750 ft AGL.
* Transport Winds....West around 15 mph.
.Forecast days 3 through 7......
.TUESDAY...Clear. Lows 39 to 46. Highs 67 to 74. West winds 10 to
20 mph with gusts to around 30 mph.
.WEDNESDAY...Partly cloudy. Lows 46 to 53. Highs 72 to 79.
Northwest winds 5 to 10 mph with gusts to around 20 mph.
.THURSDAY...Partly cloudy. Lows 51 to 58. Highs 75 to 82. West
winds 10 to 15 mph with gusts to around 20 mph.
.FRIDAY...Mostly clear. Slight chance of rain. Lows in the mid
50s. Highs around 80.
.SATURDAY...Partly cloudy with slight chance of showers. Lows in
the lower 50s. Highs in the lower 70s.
$$
IDZ410-062215-
Upper Snake River Valley/Idaho Falls BLM-
230 AM MDT Sun Sep 6 2026
.Today...
* 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 12 to 17 mph with gusts to around
25 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......10500-11500 ft AGL.
* Transport Winds....South around 10 mph increasing to around 20
mph in the afternoon.
.TONIGHT...
* Sky/weather........Mostly cloudy. Chance of rain showers and
slight chance of thunderstorms through the
night.
* Chc of thunder.....20 percent.
* Min Temperature....44-50.
24 hr trend......2 degrees down.
* Max Humidity.......79-87 percent.
24 hr trend......25 percent up.
* 20ft winds.........South winds 8 to 18 mph with gusts to around
30 mph.
* Chc Wetting Rain...30 percent.
* Mixing Height......500-1500 ft AGL.
* Transport Winds....South around 20 mph.
.LABOR DAY...
* Sky/weather........Partly cloudy then becoming sunny. Chance of
rain showers and slight chance of
thunderstorms in the morning.
* Chc of thunder.....20 percent.
* Max Temperature....62-69.
24 hr trend......14 degrees down.
* Min Humidity.......26-34 percent.
24 hr trend......11 percent up.
* 20ft winds.........Southwest winds 13 to 23 mph with gusts to
around 35 mph.
* Chc Wetting Rain...10 percent.
* Mixing Height......8500-9500 ft AGL.
* Transport Winds....Southwest 20 to 25 mph.
.Forecast days 3 through 7......
.TUESDAY...Breezy, clear. Lows 38 to 44. Highs 66 to 73.
Southwest winds 15 to 25 mph with gusts to around 35 mph.
.WEDNESDAY...Mostly clear. Lows 41 to 47. Highs 72 to 79.
Southwest winds 10 to 15 mph with gusts to around 20 mph.
.THURSDAY...Mostly clear. Lows 46 to 52. Highs 74 to 81.
Southwest winds 10 to 15 mph with gusts to around 25 mph.
.FRIDAY...Mostly clear. Lows in the lower 50s. Highs in the upper
70s.
.SATURDAY...Partly cloudy with slight chance of rain. Lows in the
upper 40s. Highs in the lower 70s.
$$
IDZ411-062215-
Centennial Mountains and Snake River Range/Targhee NF-
230 AM MDT Sun Sep 6 2026
.Today...
* Sky/weather........Mostly sunny.
* Chc of thunder.....0 percent.
* Max Temperature....Around 78 valleys and 67-74 ridges.
24 hr trend......2 degrees up.
* Min Humidity.......20-28 percent.
24 hr trend......Little change.
* 20ft winds.........
Valleys/lwr slopes...South 10 to 15 mph.
Ridges/upr slopes....South 11 to 16 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 25
mph in the afternoon.
.TONIGHT...
* Sky/weather........Cloudy. Chance of rain showers in the evening.
Slight chance of thunderstorms through the
night. Rain showers after midnight.
* Chc of thunder.....20 percent.
* Min Temperature....41-47.
24 hr trend......4 degrees down.
* Max Humidity.......88-96 percent.
24 hr trend......41 percent up.
* 20ft winds.........
Valleys/lwr slopes...South 8 to 13 mph.
Ridges/upr slopes....South 8 to 13 mph with gusts to around 25
mph.
* Chc Wetting Rain...70 percent.
* Mixing Height......500-1500 ft AGL.
* Transport Winds....South around 15 mph.
.LABOR DAY...
* Sky/weather........Mostly cloudy then becoming partly cloudy.
Chance of rain showers in the morning. Slight
chance of thunderstorms through the day.
Slight chance of rain showers in the
afternoon.
* Chc of thunder.....20 percent.
* Max Temperature....Around 63 valleys and 53-60 ridges.
24 hr trend......14 degrees down.
* Min Humidity.......27-35 percent valleys and 32-40 percent
ridges.
24 hr trend......11 percent up.
* 20ft winds.........
Valleys/lwr slopes...Southwest 8 to 18 mph.
Ridges/upr slopes....Southwest 8 to 18 mph with gusts to around
30 mph.
* Chc Wetting Rain...20 percent.
* Mixing Height......7250-8250 ft AGL.
* Transport Winds....Southwest around 15 mph increasing to around
25 mph in the afternoon.
.Forecast days 3 through 7......
.TUESDAY...Clear. Lows 34 to 41. Highs 57 to 64. Southwest winds
10 to 20 mph with gusts to around 30 mph.
.WEDNESDAY...Mostly clear. Lows 37 to 44. Highs 63 to 70. South
winds 5 to 10 mph with gusts to around 20 mph.
.THURSDAY...Mostly clear. Lows 42 to 49. Highs 64 to 71. South
winds 10 to 15 mph with gusts to around 25 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
.SATURDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the mid 40s. Highs in the lower
60s.
$$
IDZ413-062215-
Caribou Range/Caribou NF-
230 AM MDT Sun Sep 6 2026
.Today...
* Sky/weather........Sunny then becoming partly cloudy.
* Chc of thunder.....0 percent.
* Max Temperature....76-83 valleys and 69-76 ridges.
24 hr trend......Little change.
* Min Humidity.......21-29 percent valleys and 25-33 percent
ridges.
24 hr trend......6 percent up.
* 20ft winds.........
Valleys/lwr slopes...South 13 to 18 mph.
Ridges/upr slopes....South 13 to 18 mph with gusts to around 25
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......9750-10750 ft AGL.
* Transport Winds....South around 15 mph increasing to around 25
mph in the afternoon.
.TONIGHT...
* Sky/weather........Mostly cloudy. Chance of showers and
thunderstorms in the evening, then rain
showers likely and slight chance of
thunderstorms after midnight.
* Chc of thunder.....50 percent.
* Min Temperature....43-50.
24 hr trend......5 degrees down.
* Max Humidity.......82-90 percent.
24 hr trend......44 percent up.
* 20ft winds.........
Valleys/lwr slopes...South 8 to 18 mph.
Ridges/upr slopes....South 8 to 18 mph with gusts to around 30
mph.
* Chc Wetting Rain...50 percent.
* Mixing Height......500-1500 ft AGL.
* Transport Winds....South 15 to 20 mph.
.LABOR DAY...
* Sky/weather........Mostly cloudy then becoming mostly sunny.
Chance of rain showers and slight chance of
thunderstorms in the morning.
* Chc of thunder.....20 percent.
* Max Temperature....64-71 valleys and 57-64 ridges.
24 hr trend......13 degrees down.
* Min Humidity.......26-34 percent valleys and 30-38 percent
ridges.
24 hr trend......5 percent up.
* 20ft winds.........
Valleys/lwr slopes...West 9 to 14 mph.
Ridges/upr slopes....West 9 to 14 mph with gusts to around 25
mph.
* Chc Wetting Rain...10 percent.
* Mixing Height......8250-9250 ft AGL.
* Transport Winds....West 15 to 20 mph.
.Forecast days 3 through 7......
.TUESDAY...Clear. Lows 39 to 46. Highs 66 to 73. West winds 10 to
20 mph with gusts to around 30 mph.
.WEDNESDAY...Partly cloudy. Lows 42 to 49. Highs 71 to 78. North
winds 5 to 10 mph with gusts to around 20 mph.
.THURSDAY...Mostly clear. Lows 47 to 54. Highs 73 to 80.
Southwest winds 10 to 15 mph with gusts to around 25 mph.
.FRIDAY...Mostly clear. Lows in the lower 50s. Highs in the mid
70s.
.SATURDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows around 50. Highs in the upper 60s.
$$
.OUTLOOK FOR September 13th-19th: ABOVE AVERAGE temperatures
and PRECIPITATION.
$$