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Sinlaku Continues to Impact the Marianas; Severe Weather from the Central US to the Northeast; Late-Season Snow in the Northwest

Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Lost Trail Pass (ITD87)

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

light snow

31°F

-1°C

Humidity 92%
Wind Speed SSW 2 MPH
Barometer NA
Dewpoint 29°F (-2°C)
Visibility 1.24 mi
Last update 15 Apr 03:15 AM MDT
Extended Forecast for

Lost Trail Pass MT

Winter Weather Advisory April 15, 06:00pm until April 16, 09:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Overnight

    Overnight: Snow showers likely, mainly after 5am. Mostly cloudy, with a low around 31. South southwest wind around 6 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 31 °F

    Snow Showers
    Likely

  • Wednesday

    Wednesday: Snow showers. Some thunder is also possible. High near 40. South southwest wind 5 to 10 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 40 °F

    Snow Showers

  • Wednesday Night

    Wednesday Night: Snow showers, mainly before 9pm. The snow could be heavy at times. Low around 18. West wind 5 to 9 mph becoming light west northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 18 °F

    Heavy Snow
    then Snow
    Showers
    Likely

  • Thursday

    Thursday: Snow showers. High near 27. Northwest wind 5 to 10 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 27 °F

    Snow Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of snow showers. Mostly cloudy, with a low around 17. Northwest wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 26 mph. New snow accumulation of less than a half inch possible.

    Low: 17 °F

    Chance Snow
    Showers

  • Friday

    Friday: Snow showers likely, mainly after noon. Mostly cloudy, with a high near 32. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 32 °F

    Snow Showers
    Likely

  • Friday Night

    Friday Night: Mostly clear, with a low around 17.

    Low: 17 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 44.

    High: 44 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

Detailed Forecast

Overnight
Snow showers likely, mainly after 5am. Mostly cloudy, with a low around 31. South southwest wind around 6 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.
Wednesday
Snow showers. Some thunder is also possible. High near 40. South southwest wind 5 to 10 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Wednesday Night
Snow showers, mainly before 9pm. The snow could be heavy at times. Low around 18. West wind 5 to 9 mph becoming light west northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Thursday
Snow showers. High near 27. Northwest wind 5 to 10 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Thursday Night
A 40 percent chance of snow showers. Mostly cloudy, with a low around 17. Northwest wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 26 mph. New snow accumulation of less than a half inch possible.
Friday
Snow showers likely, mainly after noon. Mostly cloudy, with a high near 32. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Friday Night
Mostly clear, with a low around 17.
Saturday
Sunny, with a high near 44.
Saturday Night
Partly cloudy, with a low around 25.
Sunday
Mostly sunny, with a high near 52.
Sunday Night
Mostly cloudy, with a low around 30.
Monday
A slight chance of rain and snow. Snow level rising to 7900 feet in the afternoon. Mostly sunny, with a high near 56.
Monday Night
A slight chance of rain and snow. Snow level 8200 feet lowering to 7600 feet after midnight . Partly cloudy, with a low around 33.
Tuesday
A chance of rain and snow. Snow level 7400 feet. Partly sunny, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lost Trail Pass MT
 45.68°N 113.94°W (Elev. 7077 ft)
Last Update:
2:01 am MDT Apr 15, 2026
Forecast Valid:
3am MDT Apr 15, 2026-6pm MDT Apr 21, 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