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

49°F

9°C

Humidity 30%
Wind Speed SE 0 MPH
Barometer NA
Dewpoint 18°F (-8°C)
Visibility 1.24 mi
Last update 10 Apr 12:15 PM MDT
Extended Forecast for

Lost Trail Pass MT

  • This Afternoon

    This Afternoon: Rain likely, mainly after 5pm. Partly sunny, with a high near 60. South wind 6 to 15 mph becoming east. Winds could gust as high as 24 mph. Chance of precipitation is 60%.

    High: 60 °F

    Rain Likely

  • Tonight

    Tonight: Rain and thunderstorms before 4am, then a slight chance of rain between 4am and 5am. Low around 37. West southwest wind 7 to 17 mph becoming southeast in the evening. Winds could gust as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 37 °F

    Showers then
    Chance Rain

  • Saturday

    Saturday: Rain and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. High near 53. 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: 53 °F

    Slight Chance
    Rain then
    Showers

  • Saturday Night

    Saturday Night: A chance of rain and snow showers before 9pm, then a chance of rain between 9pm and midnight. Some thunder is also possible. Partly cloudy, with a low around 33. West southwest wind around 6 mph becoming light and variable after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    Low: 33 °F

    Chance
    Rain/Snow
    then Partly
    Cloudy

  • Sunday

    Sunday: A slight chance of rain and snow before noon, then rain. Some thunder is also possible. High near 49. South southeast wind 3 to 7 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 49 °F

    Slight Chance
    Rain/Snow
    then Showers

  • Sunday Night

    Sunday Night: Rain before 9pm, then rain, possibly mixed with snow between 9pm and 3am, then snow likely after 3am. Low around 32. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Rain/Snow

  • Monday

    Monday: Snow before noon, then snow showers after noon. Some thunder is also possible. High near 42. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    High: 42 °F

    Snow

  • Monday Night

    Monday Night: A chance of snow. Mostly cloudy, with a low around 30.

    Low: 30 °F

    Chance Snow

  • Tuesday

    Tuesday: A chance of snow, mainly before noon. Partly sunny, with a high near 45.

    High: 45 °F

    Chance Snow

Detailed Forecast

This Afternoon
Rain likely, mainly after 5pm. Partly sunny, with a high near 60. South wind 6 to 15 mph becoming east. Winds could gust as high as 24 mph. Chance of precipitation is 60%.
Tonight
Rain and thunderstorms before 4am, then a slight chance of rain between 4am and 5am. Low around 37. West southwest wind 7 to 17 mph becoming southeast in the evening. Winds could gust as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Rain and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. High near 53. 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 chance of rain and snow showers before 9pm, then a chance of rain between 9pm and midnight. Some thunder is also possible. Partly cloudy, with a low around 33. West southwest wind around 6 mph becoming light and variable after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Sunday
A slight chance of rain and snow before noon, then rain. Some thunder is also possible. High near 49. South southeast wind 3 to 7 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Sunday Night
Rain before 9pm, then rain, possibly mixed with snow between 9pm and 3am, then snow likely after 3am. Low around 32. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Monday
Snow before noon, then snow showers after noon. Some thunder is also possible. High near 42. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Monday Night
A chance of snow. Mostly cloudy, with a low around 30.
Tuesday
A chance of snow, mainly before noon. Partly sunny, with a high near 45.
Tuesday Night
A chance of snow after midnight. Mostly cloudy, with a low around 31.
Wednesday
Snow. Cloudy, with a high near 41.
Wednesday Night
Snow likely. Mostly cloudy, with a low around 23.
Thursday
Snow likely. Mostly cloudy, with a high near 34.
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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:
12:22 pm MDT Apr 10, 2026
Forecast Valid:
12pm MDT Apr 10, 2026-6pm MDT Apr 16, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation