Likelihood of HISTORIC Northern Rockies 3-5 day precipitation and snowmelt this week in some valleys and west slopes resulting in poor drainage ponding and stream flooding threats along with rockslides. Several feet of heavy snow above 8000 feet possible.

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Hazardous Weather Conditions

Current conditions at

Lost Trail Pass (ITD87)

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

Rain

33°F

1°C

Humidity NA
Wind Speed SE 1 MPH
Barometer NA
Dewpoint N/A
Visibility 1.07 mi
Last update NA
Extended Forecast for

4 Miles WNW Lost Trail Pass MT

  • Overnight

    Overnight: Snow.  Low around 30. Southwest wind around 21 mph, with gusts as high as 40 mph.  Chance of precipitation is 100%. Total nighttime snow accumulation of 3 to 5 inches possible.

    Low: 30 °F

    Snow

  • Tuesday

    Tuesday: Snow before 2pm, then a chance of snow after 5pm.  Temperature falling to around 25 by 4pm. West wind 13 to 21 mph, with gusts as high as 44 mph.  Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    High: 33 °F

    Snow then
    Chance Snow

  • Tuesday Night

    Tuesday Night: Snow, mainly after 9pm. The snow could be heavy at times.  Temperature rising to around 34 by 5am. West southwest wind 6 to 14 mph, with gusts as high as 29 mph.  Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.

    Low: 25 °F

    Heavy Snow

  • Wednesday

    Wednesday: Snow before 8am, then rain and snow between 8am and 2pm, then rain after 2pm.  High near 35. Southwest wind 10 to 14 mph, with gusts as high as 31 mph.  Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    High: 35 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain likely before 11pm, then a chance of rain and snow.  Mostly cloudy, with a low around 33. Southwest wind 10 to 14 mph, with gusts as high as 31 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Rain/Snow
    Likely

  • Thursday

    Thursday: Rain and snow.  High near 37. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Rain/Snow

  • Thursday Night

    Thursday Night: Rain and snow likely before 11pm, then a chance of snow between 11pm and 2am, then a chance of rain and snow after 2am.  Cloudy, with a low around 32. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 32 °F

    Rain/Snow
    Likely

  • Friday

    Friday: A chance of rain and snow before 8am, then a chance of snow.  Mostly cloudy, with a high near 35.

    High: 35 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Friday Night

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

    Low: 28 °F

    Slight Chance
    Snow

Detailed Forecast

Overnight
Snow. Low around 30. Southwest wind around 21 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 3 to 5 inches possible.
Tuesday
Snow before 2pm, then a chance of snow after 5pm. Temperature falling to around 25 by 4pm. West wind 13 to 21 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Tuesday Night
Snow, mainly after 9pm. The snow could be heavy at times. Temperature rising to around 34 by 5am. West southwest wind 6 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.
Wednesday
Snow before 8am, then rain and snow between 8am and 2pm, then rain after 2pm. High near 35. Southwest wind 10 to 14 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Wednesday Night
Rain likely before 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 33. Southwest wind 10 to 14 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday
Rain and snow. High near 37. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Thursday Night
Rain and snow likely before 11pm, then a chance of snow between 11pm and 2am, then a chance of rain and snow after 2am. Cloudy, with a low around 32. Chance of precipitation is 60%. Little or no snow accumulation expected.
Friday
A chance of rain and snow before 8am, then a chance of snow. Mostly cloudy, with a high near 35.
Friday Night
A slight 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 33.
Saturday Night
Partly cloudy, with a low around 26.
Sunday
A chance of snow. Partly sunny, with a high near 32.
Sunday Night
Mostly cloudy, with a low around 26.
Monday
A chance of snow. Partly sunny, with a high near 34.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Lost Trail Pass MT
 45.72°N 114.01°W (Elev. 7595 ft)
1:02 am MST Dec 9, 2025
2am MST Dec 9, 2025-6pm MST Dec 15, 2025
 
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Additional Resources

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Hourly Weather Forecast

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