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

Lake Effect Snow through Saturday: A Series of Storms Impact the West

Lake effect snow showers will continue through Saturday downwind of Lakes Erie, Ontario and the eastern portion of Lake Superior. A series of storm systems will continue to impact California and the Pacific Northwest through the weekend and into next week, bringing widespread rainfall, mountain snowfall, and gusty winds. Coastal flooding is expected in northern California. Read More >

Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

Lat: 48.74111°NLon: 113.43306°WElev: 4550.0ft.

NA

36°F

2°C

Humidity 66%
Wind Speed NA 9 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Wind Chill29°F (-2°C)
Last update 02 Jan 06:10 AM MST
Extended Forecast for

5 Miles WSW St Mary MT

  • Today

    Today: A 30 percent chance of snow, mainly between 8am and 2pm. Partly sunny, with a high near 29. Breezy, with a west southwest wind 20 to 25 mph, with gusts as high as 44 mph. Total daytime snow accumulation of around an inch possible.

    High: 29 °F

    Chance Snow
    and Breezy

  • Tonight

    Tonight: A slight chance of snow and sleet before 3am, then a slight chance of snow after 4am. Mostly cloudy, with a low around 27. West southwest wind 14 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.

    Low: 27 °F

    Slight Chance
    Snow/Sleet
    then Slight
    Chance Snow

  • Saturday

    Saturday: A slight chance of snow after 11am, mixing with sleet after 2pm. Mostly sunny, with a high near 33. Breezy, with a west southwest wind 14 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 20%.

    High: 33 °F

    Slight Chance
    Snow then
    Slight Chance
    Snow/Sleet
    and Breezy

  • Saturday Night

    Saturday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 30. Breezy, with a southwest wind 23 to 26 mph, with gusts as high as 47 mph. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Chance Snow
    and Breezy

  • Sunday

    Sunday: A 50 percent chance of snow. Partly sunny, with a high near 31. Windy, with a southwest wind 28 to 31 mph, with gusts as high as 55 mph. New snow accumulation of 1 to 2 inches possible.

    High: 31 °F

    Chance Snow
    and Windy

  • Sunday Night

    Sunday Night: A 30 percent chance of snow. Mostly cloudy, with a low around 25. Windy, with a west southwest wind 25 to 31 mph, with gusts as high as 55 mph. New snow accumulation of less than a half inch possible.

    Low: 25 °F

    Chance Snow
    and Windy

  • Monday

    Monday: A 40 percent chance of snow. Partly sunny, with a high near 26. Breezy, with a west southwest wind 23 to 25 mph, with gusts as high as 44 mph. New snow accumulation of around an inch possible.

    High: 26 °F

    Chance Snow
    and Breezy

  • Monday Night

    Monday Night: A slight chance of snow before 11pm. Mostly cloudy, with a low around 21. Windy, with a west southwest wind 24 to 31 mph, with gusts as high as 55 mph.

    Low: 21 °F

    Slight Chance
    Snow and
    Breezy then
    Mostly Cloudy
    and Windy

  • Tuesday

    Tuesday: A chance of snow, mainly after 11am. Mostly cloudy, with a high near 23. Windy.

    High: 23 °F

    Chance Snow
    and Windy

Detailed Forecast

Today
A 30 percent chance of snow, mainly between 8am and 2pm. Partly sunny, with a high near 29. Breezy, with a west southwest wind 20 to 25 mph, with gusts as high as 44 mph. Total daytime snow accumulation of around an inch possible.
Tonight
A slight chance of snow and sleet before 3am, then a slight chance of snow after 4am. Mostly cloudy, with a low around 27. West southwest wind 14 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.
Saturday
A slight chance of snow after 11am, mixing with sleet after 2pm. Mostly sunny, with a high near 33. Breezy, with a west southwest wind 14 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 20%.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 30. Breezy, with a southwest wind 23 to 26 mph, with gusts as high as 47 mph. New snow accumulation of less than a half inch possible.
Sunday
A 50 percent chance of snow. Partly sunny, with a high near 31. Windy, with a southwest wind 28 to 31 mph, with gusts as high as 55 mph. New snow accumulation of 1 to 2 inches possible.
Sunday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 25. Windy, with a west southwest wind 25 to 31 mph, with gusts as high as 55 mph. New snow accumulation of less than a half inch possible.
Monday
A 40 percent chance of snow. Partly sunny, with a high near 26. Breezy, with a west southwest wind 23 to 25 mph, with gusts as high as 44 mph. New snow accumulation of around an inch possible.
Monday Night
A slight chance of snow before 11pm. Mostly cloudy, with a low around 21. Windy, with a west southwest wind 24 to 31 mph, with gusts as high as 55 mph.
Tuesday
A chance of snow, mainly after 11am. Mostly cloudy, with a high near 23. Windy.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 20. Windy.
Wednesday
A chance of snow. Partly sunny, with a high near 22. Breezy.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 14. Breezy.
Thursday
A chance of snow. Partly sunny, with a high near 19.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW St Mary MT
 48.73°N 113.53°W (Elev. 6778 ft)
Last Update:
4:37 am MST Jan 2, 2026
Forecast Valid:
7am MST Jan 2, 2026-6pm MST Jan 8, 2026
 
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