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

Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

Lost Trail Pass (ITD87)

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

NA

33°F

1°C

Humidity NA
Wind Speed SSW 4 MPH
Barometer NA
Dewpoint N/A
Visibility 0.16 mi
Wind Chill29°F (-2°C)
Last update NA
Extended Forecast for

Lost Trail Pass MT

  • Overnight

    Overnight: Partly cloudy, with a low around 31. Light south wind.

    Low: 31 °F

    Partly Cloudy

  • Sunday

    Sunday: Rain and snow showers likely before 1pm, then rain showers between 1pm and 5pm, then rain and snow showers after 5pm. Some thunder is also possible. High near 49. Light and variable wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 49 °F

    Chance
    Rain/Snow
    then
    Rain/Snow

  • Sunday Night

    Sunday Night: Rain and snow showers, becoming all snow after 10pm. Some thunder is also possible. Low around 31. South southwest wind around 6 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 31 °F

    Rain/Snow
    then Snow
    Showers
    Likely

  • Monday

    Monday: Snow showers. High near 41. South southwest wind 6 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 41 °F

    Snow Showers

  • Monday Night

    Monday Night: A 40 percent chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 30. West wind around 6 mph becoming calm after midnight. Winds could gust as high as 20 mph. Little or no snow accumulation expected.

    Low: 30 °F

    Chance Snow
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of snow showers before noon. Partly sunny, with a high near 45.

    High: 45 °F

    Slight Chance
    Snow Showers
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow showers after midnight. Mostly cloudy, with a low around 31. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Wednesday

    Wednesday: Snow showers. Cloudy, with a high near 41.

    High: 41 °F

    Snow Showers

  • Wednesday Night

    Wednesday Night: Snow. Cloudy, with a low around 21.

    Low: 21 °F

    Snow

Detailed Forecast

Overnight
Partly cloudy, with a low around 31. Light south wind.
Sunday
Rain and snow showers likely before 1pm, then rain showers between 1pm and 5pm, then rain and snow showers after 5pm. Some thunder is also possible. High near 49. Light and variable wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 90%. Little or no snow accumulation expected.
Sunday Night
Rain and snow showers, becoming all snow after 10pm. Some thunder is also possible. Low around 31. South southwest wind around 6 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Monday
Snow showers. High near 41. South southwest wind 6 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Monday Night
A 40 percent chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 30. West wind around 6 mph becoming calm after midnight. Winds could gust as high as 20 mph. Little or no snow accumulation expected.
Tuesday
A 20 percent chance of snow showers before noon. Partly sunny, with a high near 45.
Tuesday Night
A 50 percent chance of snow showers after midnight. Mostly cloudy, with a low around 31. New snow accumulation of less than a half inch possible.
Wednesday
Snow showers. Cloudy, with a high near 41.
Wednesday Night
Snow. Cloudy, with a low around 21.
Thursday
Snow. Cloudy, with a high near 31.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 17.
Friday
A chance of snow. Partly sunny, with a high near 37.
Friday Night
A slight chance of snow. Partly cloudy, with a low around 19.
Saturday
A slight chance of snow. Mostly sunny, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lost Trail Pass MT
 45.7°N 113.94°W (Elev. 6598 ft)
Last Update:
2:01 am MDT Apr 12, 2026
Forecast Valid:
3am MDT Apr 12, 2026-6pm MDT Apr 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation