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

39°F

4°C

Humidity 57%
Wind Speed NA 12 MPH
Barometer NA
Dewpoint 24°F (-4°C)
Visibility NA
Wind Chill32°F (0°C)
Last update 02 Jan 12:10 AM MST
Extended Forecast for

5 Miles WSW St Mary MT

  • Overnight

    Overnight: A chance of snow before 3am, then a slight chance of snow after 5am. Mostly cloudy, with a low around 24. West southwest wind 15 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 40%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 24 °F

    Chance Snow

  • Friday

    Friday: A 40 percent chance of snow, mainly after noon. Partly sunny, with a high near 30. Breezy, with a west southwest wind 21 to 26 mph, with gusts as high as 49 mph. New snow accumulation of 1 to 2 inches possible.

    High: 30 °F

    Chance Snow
    and Breezy

  • Friday Night

    Friday Night: A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 28. West southwest wind 15 to 21 mph, with gusts as high as 38 mph.

    Low: 28 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of snow after 11am. Partly sunny, with a high near 32. Breezy, with a west southwest wind 15 to 22 mph, with gusts as high as 37 mph.

    High: 32 °F

    Slight Chance
    Snow and
    Breezy

  • Saturday Night

    Saturday Night: A 30 percent chance of snow, mainly after 11pm. 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 west southwest wind 29 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, mainly before 11pm. Mostly cloudy, with a low around 26. Windy, with a west southwest wind 25 to 30 mph, with gusts as high as 50 mph. New snow accumulation of less than a half inch possible.

    Low: 26 °F

    Chance Snow
    and Windy

  • Monday

    Monday: A chance of snow. Partly sunny, with a high near 28. Breezy, with a west southwest wind 22 to 24 mph, with gusts as high as 41 mph.

    High: 28 °F

    Chance Snow
    and Breezy

  • Monday Night

    Monday Night: A slight chance of snow before 11pm. Mostly cloudy, with a low around 23. Breezy.

    Low: 23 °F

    Breezy.
    Slight Chance
    Snow then
    Mostly Cloudy

Detailed Forecast

Overnight
A chance of snow before 3am, then a slight chance of snow after 5am. Mostly cloudy, with a low around 24. West southwest wind 15 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 40%. Total nighttime snow accumulation of less than a half inch possible.
Friday
A 40 percent chance of snow, mainly after noon. Partly sunny, with a high near 30. Breezy, with a west southwest wind 21 to 26 mph, with gusts as high as 49 mph. New snow accumulation of 1 to 2 inches possible.
Friday Night
A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 28. West southwest wind 15 to 21 mph, with gusts as high as 38 mph.
Saturday
A 20 percent chance of snow after 11am. Partly sunny, with a high near 32. Breezy, with a west southwest wind 15 to 22 mph, with gusts as high as 37 mph.
Saturday Night
A 30 percent chance of snow, mainly after 11pm. 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 west southwest wind 29 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, mainly before 11pm. Mostly cloudy, with a low around 26. Windy, with a west southwest wind 25 to 30 mph, with gusts as high as 50 mph. New snow accumulation of less than a half inch possible.
Monday
A chance of snow. Partly sunny, with a high near 28. Breezy, with a west southwest wind 22 to 24 mph, with gusts as high as 41 mph.
Monday Night
A slight chance of snow before 11pm. Mostly cloudy, with a low around 23. Breezy.
Tuesday
A chance of snow, mainly after 11am. Mostly cloudy, with a high near 24. Windy.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 22. Windy.
Wednesday
A chance of snow. Partly sunny, with a high near 25. Breezy.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 16. Breezy.
Thursday
A chance of snow. Partly sunny, with a high near 21.
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Forecast Area
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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:
9:32 pm MST Jan 1, 2026
Forecast Valid:
12am MST Jan 2, 2026-6pm MST Jan 8, 2026
 
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