Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pocatello, ID
Issued by NWS Pocatello, ID
947
FNUS55 KPIH 300754
FWFPIH
Fire Weather Planning Forecast for Southeast Idaho
National Weather Service Pocatello ID
154 AM MDT Sun Aug 30 2026
.DISCUSSION...
* Central Idaho Dispatch Area weather impact summary (Zones 475
and 476)...
Sunny and cooler today with high temperatures holding in the 60s
and lower 70s. Minimum afternoon relative humidity values will
range from 20% to 30%, followed by excellent overnight recovery
as valley lows fall into the 30s. Shower and thunderstorm chances
return Tuesday as a shortwave taps into elevated moisture over
the Central Mountains and Montana Divide. Breezy west-southwest
winds and near-normal temperatures will continue through late week.
* East Idaho Dispatch Area weather impact summary (Zones 410...411
and 413)...
Rain and storms exit into Wyoming this morning, yielding clear,
breezy conditions by afternoon. Expect southwest wind gusts of 25
to 30 mph across Zone 410 (Snake Plain/Arco Desert) with daytime
minimum RH values dropping into the 15% to 25% range. Passing
shortwave energy on Monday will reintroduce scattered shower and
thunderstorm risks across Zones 411 and 413. Temperatures will
remain near seasonal averages through mid-week.
* South Central Idaho Dispatch Area weather impact summary (Zones
422...425 and 427)...
Clearing skies and seasonably cool temperatures will dominate today,
with valley highs in the 70s. West-southwest winds of 15 to 20 mph
with gusts to 25 mph will combine with afternoon relative humidity
values of 20% to 28%. Overnight RH recoveries will be very good to
excellent. Isolated afternoon mountain showers remain possible early
to mid-week, accompanied by periodic afternoon wind gusts.
IDZ475-302215-
East Salmon River Mountains/Salmon NF-
154 AM MDT Sun Aug 30 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....64-71 valleys and 56-62 ridges.
24 hr trend......3 degrees down.
* Min Humidity.......15-23 percent.
24 hr trend......8 percent down.
* 20ft winds.........
Valleys/lwr slopes...West 5 to 10 mph.
Ridges/upr slopes....West 6 to 11 mph with gusts to around 20
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......7500-8500 ft AGL.
* Transport Winds....West 10 to 15 mph.
.TONIGHT...
* Sky/weather........Mostly clear.
* Chc of thunder.....0 percent.
* Min Temperature....38-45.
24 hr trend......Little change.
* Max Humidity.......38-46 percent.
24 hr trend......26 percent down.
* 20ft winds.........
Valleys/lwr slopes...West 5 to 8 mph shifting to the southwest
4 to 5 mph after midnight.
Ridges/upr slopes....West 4 to 9 mph. Gusts up to 15 mph in the
evening.
* Chc Wetting Rain...0 percent.
* Mixing Height......100-1100 ft AGL.
* Transport Winds....West around 10 mph in the evening becoming
light.
.MONDAY...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....72-79 valleys and 64-70 ridges.
24 hr trend......9 degrees up.
* Min Humidity.......12-17 percent.
24 hr trend......4 percent down.
* 20ft winds.........
Valleys/lwr slopes...Southwest 4 to 6 mph.
Ridges/upr slopes....Southwest 4 to 7 mph. Gusts up to 15 mph
in the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......9500-10500 ft AGL.
* Transport Winds....Light winds becoming southwest around 10 mph
in the afternoon.
.Forecast days 3 through 7......
.TUESDAY...Partly cloudy. Chance of showers. Lows 44 to 51. Highs
68 to 75. South winds 5 to 10 mph with gusts to around 20 mph.
.WEDNESDAY...Cooler. Showers likely and slight chance of
thunderstorms. Lows 42 to 49. Highs 58 to 65. South winds 10 to
20 mph with gusts to around 30 mph.
.THURSDAY...Partly cloudy. Slight chance of rain. Lows 40 to 47.
Highs 58 to 65. Southwest winds 10 to 15 mph with gusts to around
30 mph.
.FRIDAY...Partly cloudy with slight chance of rain. Lows in the
lower 40s. Highs in the mid 60s.
.SATURDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
$$
IDZ476-302215-
Lemhi and Lost River Range/Challis NF-
154 AM MDT Sun Aug 30 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....66-73 valleys and 56-63 ridges.
24 hr trend......Little change.
* Min Humidity.......13-21 percent.
24 hr trend......14 percent down.
* 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...0 percent.
* Mixing Height......8250-9250 ft AGL.
* Transport Winds....West 10 to 15 mph.
.TONIGHT...
* Sky/weather........Mostly clear.
* Chc of thunder.....0 percent.
* Min Temperature....37-44.
24 hr trend......Little change.
* Max Humidity.......37-45 percent valleys and 32-40 percent
ridges.
24 hr trend......31 percent down.
* 20ft winds.........
Valleys/lwr slopes...West 4 to 9 mph.
Ridges/upr slopes....West 4 to 9 mph. Gusts up to 15 mph in the
evening.
* Chc Wetting Rain...0 percent.
* Mixing Height......400-1400 ft AGL.
* Transport Winds....West around 10 mph in the evening becoming
light.
.MONDAY...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....72-79 valleys and 62-69 ridges.
24 hr trend......6 degrees up.
* Min Humidity.......13-18 percent valleys and 16-24 percent
ridges.
24 hr trend......Little change.
* 20ft winds.........
Valleys/lwr slopes...Southwest 4 to 9 mph.
Ridges/upr slopes....Southwest 4 to 9 mph. Gusts up to 15 mph
in the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......9750-10750 ft AGL.
* Transport Winds....Light winds becoming southwest around 15 mph
in the afternoon.
.Forecast days 3 through 7......
.TUESDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows 44 to 51. Highs 65 to 72. South winds 10 to
20 mph with gusts to around 30 mph.
.WEDNESDAY...Breezy. Partly cloudy. Chance of showers and slight
chance of thunderstorms. Lows 42 to 49. Highs 60 to 67. South
winds 15 to 25 mph with gusts to around 35 mph.
.THURSDAY...Partly cloudy. Lows 39 to 46. Highs 59 to 66.
Southwest winds 10 to 20 mph with gusts to around 35 mph.
.FRIDAY...Partly cloudy. Lows in the lower 40s. Highs in the
upper 60s.
.SATURDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
$$
IDZ422-302215-
Sawtooth Range/Northern Sawtooth NF-
154 AM MDT Sun Aug 30 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....66-73 valleys and 56-63 ridges.
24 hr trend......2 degrees down.
* Min Humidity.......12-17 percent.
24 hr trend......12 percent down.
* 20ft winds.........
Valleys/lwr slopes...West 10 to 15 mph.
Ridges/upr slopes....West 10 to 15 mph with gusts to around 20
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......6500-7500 ft AGL.
* Transport Winds....West 10 to 15 mph.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....36-43.
24 hr trend......Little change.
* Max Humidity.......30-38 percent.
24 hr trend......31 percent down.
* 20ft winds.........
Valleys/lwr slopes...Northwest 8 to 13 mph.
Ridges/upr slopes....West 8 to 13 mph. Gusts up to 15 mph in
the evening.
* Chc Wetting Rain...0 percent.
* Mixing Height......100-1100 ft AGL.
* Transport Winds....West around 10 mph in the evening becoming
light.
.MONDAY...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....73-80 valleys and 62-69 ridges.
24 hr trend......7 degrees up.
* Min Humidity.......13-21 percent.
24 hr trend......3 percent up.
* 20ft winds.........
Valleys/lwr slopes...South 4 to 8 mph.
Ridges/upr slopes....Southwest 4 to 8 mph. Gusts up to 15 mph
in the afternoon.
* Chc Wetting Rain...0 percent.
* Mixing Height......9250-10250 ft AGL.
* Transport Winds....Light winds becoming southwest around 15 mph
in the afternoon.
.Forecast days 3 through 7......
.TUESDAY...Partly cloudy. Slight chance of rain. Lows 43 to 50.
Highs 66 to 73. Southeast winds 10 to 15 mph with gusts to around
20 mph.
.WEDNESDAY...Breezy. Partly cloudy. Chance of showers and slight
chance of thunderstorms. Lows 41 to 48. Highs 58 to 65. South
winds 15 to 25 mph with gusts to around 35 mph.
.THURSDAY...Partly cloudy. Slight chance of rain. Lows 38 to 45.
Highs 59 to 66. Southwest winds 10 to 20 mph with gusts to around
30 mph.
.FRIDAY...Mostly clear. Lows in the lower 40s. Highs in the upper
60s.
.SATURDAY...Mostly clear. Lows in the mid 40s. Highs in the upper
60s.
$$
IDZ425-302215-
Middle Snake River Valley/Twin Falls BLM north of the Snake River-
154 AM MDT Sun Aug 30 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....Around 75.
24 hr trend......6 degrees down.
* Min Humidity.......17-25 percent.
24 hr trend......10 percent down.
* 20ft winds.........West winds 12 to 17 mph with gusts to around
30 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......6500-7500 ft AGL.
* Transport Winds....West 15 to 20 mph.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....Around 45.
24 hr trend......5 degrees down.
* Max Humidity.......51-59 percent.
24 hr trend......26 percent down.
* 20ft winds.........West winds 11 to 16 mph with gusts to around
30 mph shifting to the southwest 4 to 6 mph
with gusts to around 15 mph after midnight.
* Chc Wetting Rain...0 percent.
* Mixing Height......100-1100 ft AGL.
* Transport Winds....West around 15 mph in the evening becoming
light.
.MONDAY...
* Sky/weather........Mostly sunny.
* Chc of thunder.....0 percent.
* Max Temperature....Around 83.
24 hr trend......9 degrees up.
* Min Humidity.......22-30 percent.
24 hr trend......5 percent up.
* 20ft winds.........East winds 4 to 7 mph with gusts to around 15
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......9500-10500 ft AGL.
* Transport Winds....East around 10 mph shifting to the south in
the afternoon.
.Forecast days 3 through 7......
.TUESDAY...Partly cloudy. Chance of rain. Lows in the lower 50s.
Highs in the lower 80s. Southeast winds 10 to 15 mph with gusts
to around 20 mph.
.WEDNESDAY...Partly cloudy. Lows in the lower 50s. Highs in the
mid 70s. South winds 10 to 20 mph with gusts to around 35 mph.
.THURSDAY...Partly cloudy. Lows in the upper 40s. Highs in the
upper 70s. Southwest winds 10 to 15 mph with gusts to around
30 mph.
.FRIDAY...Mostly clear. Lows in the upper 40s. Highs in the lower
80s.
.SATURDAY...Mostly clear. Lows in the lower 50s. Highs in the
lower 80s.
$$
IDZ427-302215-
Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls
BLM south of the Snake River-
154 AM MDT Sun Aug 30 2026
.Today...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....67-74.
24 hr trend......3 degrees down.
* Min Humidity.......26-34 percent.
24 hr trend......10 percent down.
* 20ft winds.........
Valleys/lwr slopes...Northwest 6 to 11 mph.
Ridges/upr slopes....Northwest 6 to 11 mph with gusts to around
20 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......6500-7500 ft AGL.
* Transport Winds....West around 10 mph.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....44-51.
24 hr trend......2 degrees down.
* Max Humidity.......50-58 percent valleys and 39-47 percent
ridges.
24 hr trend......24 percent down.
* 20ft winds.........
Valleys/lwr slopes...Northwest 6 to 9 mph shifting to the south
after midnight.
Ridges/upr slopes....North 5 to 8 mph with gusts to around 15
mph shifting to the southeast around 4 mph
after midnight.
* Chc Wetting Rain...0 percent.
* Mixing Height......100-1100 ft AGL.
* Transport Winds....Northwest around 10 mph in the evening
becoming light.
.MONDAY...
* Sky/weather........Mostly sunny then becoming partly cloudy.
Chance of rain showers and slight chance of
thunderstorms in the afternoon.
* Chc of thunder.....20 percent.
* Max Temperature....74-81.
24 hr trend......7 degrees up.
* Min Humidity.......27-35 percent.
24 hr trend......3 percent up.
* 20ft winds.........
Valleys/lwr slopes...Southeast 4 to 9 mph.
Ridges/upr slopes....Southeast 4 to 9 mph with gusts to around
20 mph.
* Chc Wetting Rain...20 percent.
* Mixing Height......9500-10500 ft AGL.
* Transport Winds....Light winds becoming south around 10 mph in
the afternoon.
.Forecast days 3 through 7......
.TUESDAY...Breezy. Partly cloudy. Chance of showers and slight
chance of thunderstorms. Lows 49 to 56. Highs 73 to 80. South
winds 15 to 25 mph with gusts to around 30 mph.
.WEDNESDAY...Mostly clear. Lows 49 to 56. Highs 68 to 75.
Southwest winds 10 to 20 mph with gusts to around 30 mph.
.THURSDAY...Partly cloudy. Lows 45 to 52. Highs 70 to 77.
Southwest winds 10 to 15 mph with gusts to around 25 mph.
.FRIDAY...Mostly clear. Lows in the upper 40s. Highs in the upper
70s.
.SATURDAY...Mostly clear. Lows in the lower 50s. Highs in the mid
70s.
$$
IDZ410-302215-
Upper Snake River Valley/Idaho Falls BLM-
154 AM MDT Sun Aug 30 2026
.Today...
* Sky/weather........Mostly sunny. Chance of rain showers and
slight chance of thunderstorms in the morning.
* Chc of thunder.....10 percent.
* Max Temperature....68-75.
24 hr trend......3 degrees down.
* Min Humidity.......16-24 percent.
24 hr trend......16 percent down.
* 20ft winds.........Southwest winds 7 to 17 mph with gusts to
around 30 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......8250-9250 ft AGL.
* Transport Winds....Southwest 15 to 20 mph.
.TONIGHT...
* Sky/weather........Clear.
* Chc of thunder.....0 percent.
* Min Temperature....39-45.
24 hr trend......6 degrees down.
* Max Humidity.......55-63 percent.
24 hr trend......33 percent down.
* 20ft winds.........South winds 12 to 17 mph. Gusts up to 25 mph
decreasing to 15 mph after midnight.
* Chc Wetting Rain...0 percent.
* Mixing Height......300-1300 ft AGL.
* Transport Winds....Southwest 10 to 15 mph.
.MONDAY...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....73-80.
24 hr trend......6 degrees up.
* Min Humidity.......21-29 percent.
24 hr trend......5 percent up.
* 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......9500-10500 ft AGL.
* Transport Winds....Light winds becoming southwest around 10 mph
in the afternoon.
.Forecast days 3 through 7......
.TUESDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows 46 to 52. Highs 72 to 79. Southeast winds
10 to 15 mph with gusts to around 20 mph.
.WEDNESDAY...Breezy. Partly cloudy. Chance of showers and slight
chance of thunderstorms. Lows 46 to 52. Highs 68 to 75. South
winds 15 to 25 mph with gusts to around 40 mph.
.THURSDAY...Partly cloudy. Lows 42 to 48. Highs 69 to 76. South
winds 10 to 20 mph with gusts to around 30 mph.
.FRIDAY...Mostly clear. Lows in the mid 40s. Highs in the upper
70s.
.SATURDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s.
$$
IDZ411-302215-
Centennial Mountains and Snake River Range/Targhee NF-
154 AM MDT Sun Aug 30 2026
.Today...
* Sky/weather........Mostly cloudy then becoming sunny. Chance of
showers and thunderstorms in the morning.
* Chc of thunder.....40 percent.
* Max Temperature....Around 68 valleys and 58-65 ridges.
24 hr trend......Little change.
* Min Humidity.......23-31 percent.
24 hr trend......25 percent down.
* 20ft winds.........
Valleys/lwr slopes...Southwest 7 to 12 mph.
Ridges/upr slopes....Southwest 7 to 12 mph with gusts to around
25 mph.
* Chc Wetting Rain...10 percent.
* Mixing Height......7250-8250 ft AGL.
* Transport Winds....Southwest around 10 mph increasing to west
around 20 mph in the afternoon.
.TONIGHT...
* Sky/weather........Mostly clear.
* Chc of thunder.....0 percent.
* Min Temperature....36-43.
24 hr trend......5 degrees down.
* Max Humidity.......68-76 percent valleys and 49-57 percent
ridges.
24 hr trend......36 percent down.
* 20ft winds.........
Valleys/lwr slopes...South 6 to 9 mph shifting to the east
after midnight.
Ridges/upr slopes....Southwest 7 to 10 mph shifting to the
south 4 to 6 mph after midnight. Gusts up
to 20 mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......400-1400 ft AGL.
* Transport Winds....South around 10 mph.
.MONDAY...
* Sky/weather........Sunny.
* Chc of thunder.....0 percent.
* Max Temperature....Around 73 valleys and 64-71 ridges.
24 hr trend......6 degrees up.
* Min Humidity.......26-34 percent.
24 hr trend......2 percent up.
* 20ft winds.........
Valleys/lwr slopes...Southeast around 4 mph shifting to the
southwest 4 to 5 mph in the afternoon.
Ridges/upr slopes....South 4 to 7 mph with gusts to around 15
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......8250-9250 ft AGL.
* Transport Winds....Southwest 10 to 15 mph.
.Forecast days 3 through 7......
.TUESDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows 42 to 49. Highs 62 to 69. Southeast winds
10 to 15 mph with gusts to around 25 mph.
.WEDNESDAY...Breezy. Partly cloudy. Slight chance of showers and
thunderstorms. Lows 42 to 49. Highs 60 to 67. South winds 15 to
25 mph with gusts to around 35 mph.
.THURSDAY...Partly cloudy. Lows 39 to 46. Highs 61 to 68. South
winds 10 to 20 mph with gusts to around 35 mph.
.FRIDAY...Mostly clear. Lows in the lower 40s. Highs in the upper
60s.
.SATURDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the upper 60s.
$$
IDZ413-302215-
Caribou Range/Caribou NF-
154 AM MDT Sun Aug 30 2026
.Today...
* 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....68-75 valleys and 61-68 ridges.
24 hr trend......Little change.
* Min Humidity.......30-38 percent.
24 hr trend......18 percent down.
* 20ft winds.........
Valleys/lwr slopes...West 5 to 10 mph.
Ridges/upr slopes....West 6 to 11 mph with gusts to around 20
mph.
* Chc Wetting Rain...10 percent.
* Mixing Height......6750-7750 ft AGL.
* Transport Winds....West 10 to 15 mph.
.TONIGHT...
* Sky/weather........Mostly clear.
* Chc of thunder.....0 percent.
* Min Temperature....41-48.
24 hr trend......4 degrees down.
* Max Humidity.......62-70 percent valleys and 58-66 percent
ridges.
24 hr trend......26 percent down.
* 20ft winds.........
Valleys/lwr slopes...Northwest 5 to 8 mph shifting to the east
4 to 5 mph after midnight.
Ridges/upr slopes....West 7 to 10 mph shifting to the south 4
to 6 mph after midnight. Gusts up to 15
mph.
* Chc Wetting Rain...0 percent.
* Mixing Height......300-1300 ft AGL.
* Transport Winds....West around 10 mph in the evening becoming
light.
.MONDAY...
* Sky/weather........Mostly sunny then becoming partly cloudy.
Slight chance of rain in the afternoon.
* Chc of thunder.....0 percent.
* Max Temperature....74-81 valleys and 66-73 ridges.
24 hr trend......5 degrees up.
* Min Humidity.......33-41 percent.
24 hr trend......2 percent up.
* 20ft winds.........
Valleys/lwr slopes...East 4 to 5 mph shifting to the south 4 to
7 mph in the afternoon.
Ridges/upr slopes....Southeast 4 to 6 mph shifting to the
southwest in the afternoon. Gusts up to 15
mph.
* Chc Wetting Rain...10 percent.
* Mixing Height......9500-10500 ft AGL.
* Transport Winds....Light winds becoming southwest around 10 mph
in the afternoon.
.Forecast days 3 through 7......
.TUESDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows 46 to 53. Highs 70 to 77. South winds 10 to
20 mph with gusts to around 25 mph.
.WEDNESDAY...Breezy. Mostly clear. Slight chance of rain. Lows
46 to 53. Highs 67 to 74. South winds 15 to 25 mph with gusts to
around 35 mph.
.THURSDAY...Partly cloudy. Lows 43 to 50. Highs 68 to 75. South
winds 10 to 15 mph with gusts to around 30 mph.
.FRIDAY...Mostly clear. Lows in the upper 40s. Highs in the mid
70s.
.SATURDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows around 50. Highs in the mid 70s.
$$
.OUTLOOK for September 6-12: NEAR TO ABOVE NORMAL temperatures and
ABOVE NORMAL precipitation.
$$