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

Lost Trail Pass (ITD87)

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

NA

35°F

2°C

Humidity 53%
Wind Speed NNE 3 MPH
Barometer NA
Dewpoint 19°F (-7°C)
Visibility 1.24 mi
Last update 09 Apr 09:45 PM MDT
Extended Forecast for

Lost Trail Pass MT

  • Tonight

    Tonight: Mostly clear, with a low around 32. Light and variable wind.

    Low: 32 °F

    Mostly Clear

  • Friday

    Friday: A chance of rain, then showers likely and possibly a thunderstorm after 5pm. Mostly sunny, with a high near 61. South wind 5 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    High: 61 °F

    Mostly Sunny
    then Showers
    Likely

  • Friday Night

    Friday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 36. West southwest wind 7 to 17 mph becoming southeast in the evening. Winds could gust as high as 28 mph. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 36 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain, then showers and possibly a thunderstorm after noon. High near 55. South southeast wind 7 to 14 mph becoming west southwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 55 °F

    Chance Rain
    then Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 33. West wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 33 °F

    Chance Rain
    then Slight
    Chance Rain

  • Sunday

    Sunday: A chance of rain and snow before 9am, then a chance of rain between 9am and noon, then rain showers after noon. Some thunder is also possible. High near 51. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 51 °F

    Chance
    Rain/Snow
    then Showers

  • Sunday Night

    Sunday Night: Rain before midnight, then rain and snow likely. Low around 33. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 33 °F

    Rain then
    Rain/Snow
    Likely

  • Monday

    Monday: Snow. Cloudy, with a high near 44.

    High: 44 °F

    Snow

  • Monday Night

    Monday Night: A chance of snow, mainly before midnight. Mostly cloudy, with a low around 31.

    Low: 31 °F

    Chance Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 32. Light and variable wind.
Friday
A chance of rain, then showers likely and possibly a thunderstorm after 5pm. Mostly sunny, with a high near 61. South wind 5 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Friday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 36. West southwest wind 7 to 17 mph becoming southeast in the evening. Winds could gust as high as 28 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
A chance of rain, then showers and possibly a thunderstorm after noon. High near 55. South southeast wind 7 to 14 mph becoming west southwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 50 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 33. West wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A chance of rain and snow before 9am, then a chance of rain between 9am and noon, then rain showers after noon. Some thunder is also possible. High near 51. Chance of precipitation is 90%. Little or no snow accumulation expected.
Sunday Night
Rain before midnight, then rain and snow likely. Low around 33. Chance of precipitation is 80%. Little or no snow accumulation expected.
Monday
Snow. Cloudy, with a high near 44.
Monday Night
A chance of snow, mainly before midnight. Mostly cloudy, with a low around 31.
Tuesday
A chance of snow, mainly before noon. Partly sunny, with a high near 45.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 30.
Wednesday
Snow likely. Mostly cloudy, with a high near 40.
Wednesday Night
Snow likely. Mostly cloudy, with a low around 24.
Thursday
A chance of snow. Partly sunny, with a high near 41.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lost Trail Pass MT
 45.7°N 113.94°W (Elev. 6598 ft)
Last Update:
2:00 pm MDT Apr 9, 2026
Forecast Valid:
10pm MDT Apr 9, 2026-6pm MDT Apr 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation