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

Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

Lost Trail Pass (ITD87)

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

NA

36°F

2°C

Humidity 31%
Wind Speed W 3 MPH
Barometer NA
Dewpoint 8°F (-13°C)
Visibility 1.24 mi
Last update 18 Apr 11:00 PM MDT
Extended Forecast for

Lost Trail Pass MT

  • Tonight

    Tonight: Mostly clear, with a low around 27. Calm wind becoming south around 5 mph after midnight.

    Low: 27 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59. South wind 5 to 7 mph.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 36. West wind around 5 mph becoming calm.

    Low: 36 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 65. South southeast wind around 7 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.

    High: 65 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39. West southwest wind around 6 mph becoming light and variable.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Rain likely before noon, then rain and snow showers. Some thunder is also possible. Mostly cloudy, with a high near 51.

    High: 51 °F

    Rain Likely
    then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain and snow, becoming all snow after 9pm. Cloudy, with a low around 32.

    Low: 32 °F

    Rain/Snow
    then Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 27. Calm wind becoming south around 5 mph after midnight.
Sunday
Sunny, with a high near 59. South wind 5 to 7 mph.
Sunday Night
Mostly cloudy, with a low around 36. West wind around 5 mph becoming calm.
Monday
Sunny, with a high near 65. South southeast wind around 7 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.
Monday Night
Partly cloudy, with a low around 39. West southwest wind around 6 mph becoming light and variable.
Tuesday
Mostly sunny, with a high near 68.
Tuesday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 40.
Wednesday
Rain likely before noon, then rain and snow showers. Some thunder is also possible. Mostly cloudy, with a high near 51.
Wednesday Night
Rain and snow, becoming all snow after 9pm. Cloudy, with a low around 32.
Thursday
Snow. Mostly cloudy, with a high near 40.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 24.
Friday
A chance of snow. Partly sunny, with a high near 44.
Friday Night
Partly cloudy, with a low around 25.
Saturday
A slight chance of snow. Mostly sunny, with a high near 46.
Basemap Options
Click map to change the forecast location
Loading map...
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 pm MDT Apr 18, 2026
Forecast Valid:
11pm MDT Apr 18, 2026-6pm MDT Apr 25, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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