National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

Lost Trail Pass (ITD87)

Lat: 45.69302°NLon: 113.94835°WElev: 7090.0ft.

light snow

28°F

-2°C

Humidity 100%
Wind Speed SW 4 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility 0.64 mi
Wind Chill23°F (-5°C)
Last update 09 Dec 10:30 PM MST
Extended Forecast for

6 Miles WNW Gibbonsville ID

  • Tonight

    Tonight: Snow. The snow could be heavy at times. Temperature rising to around 34 by 5am. South southwest wind 6 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 4 to 8 inches possible.

    Low: 26 °F⇑

    Heavy Snow

  • Wednesday

    Wednesday: Rain and snow before 2pm, then a slight chance of rain between 2pm and 4pm. Snow level rising to 9000 feet in the afternoon. High near 36. West southwest wind 13 to 15 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 36 °F

    Rain/Snow
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before 8pm, then a chance of rain and snow. Snow level 8700 feet. Mostly cloudy, with a low around 32. Southwest wind around 15 mph, with gusts as high as 39 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Chance
    Rain/Snow

  • Thursday

    Thursday: Rain and snow likely, becoming all snow after 2pm. Snow level 8900 feet lowering to 7700 feet in the afternoon . Mostly cloudy, with a high near 36. West wind around 14 mph, with gusts as high as 43 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 36 °F

    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: Snow likely. Cloudy, with a low around 33. West southwest wind around 10 mph, with gusts as high as 38 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Low: 33 °F

    Snow Likely

  • Friday

    Friday: A 50 percent chance of snow, mainly before 11am. Mostly cloudy, with a high near 35. New snow accumulation of less than a half inch possible.

    High: 35 °F

    Chance Snow
    then Slight
    Chance Snow

  • Friday Night

    Friday Night: A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 28.

    Low: 28 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: A slight chance of snow before 11am. Partly sunny, with a high near 32.

    High: 32 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

Detailed Forecast

Tonight
Snow. The snow could be heavy at times. Temperature rising to around 34 by 5am. South southwest wind 6 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 4 to 8 inches possible.
Wednesday
Rain and snow before 2pm, then a slight chance of rain between 2pm and 4pm. Snow level rising to 9000 feet in the afternoon. High near 36. West southwest wind 13 to 15 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Wednesday Night
A chance of rain before 8pm, then a chance of rain and snow. Snow level 8700 feet. Mostly cloudy, with a low around 32. Southwest wind around 15 mph, with gusts as high as 39 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Thursday
Rain and snow likely, becoming all snow after 2pm. Snow level 8900 feet lowering to 7700 feet in the afternoon . Mostly cloudy, with a high near 36. West wind around 14 mph, with gusts as high as 43 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
Snow likely. Cloudy, with a low around 33. West southwest wind around 10 mph, with gusts as high as 38 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Friday
A 50 percent chance of snow, mainly before 11am. Mostly cloudy, with a high near 35. New snow accumulation of less than a half inch possible.
Friday Night
A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 28.
Saturday
A slight chance of snow before 11am. Partly sunny, with a high near 32.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
A slight chance of snow. Partly sunny, with a high near 34.
Sunday Night
A slight chance of snow. Mostly cloudy, with a low around 26.
Monday
A chance of snow. Partly sunny, with a high near 33.
Monday Night
A chance of snow. Mostly cloudy, with a low around 29.
Tuesday
Snow likely. Mostly cloudy, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles WNW Gibbonsville ID
 45.6°N 114.05°W (Elev. 7726 ft)
Last Update:
2:21 pm MST Dec 9, 2025
Forecast Valid:
10pm MST Dec 9, 2025-6pm MST Dec 16, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation