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

40°F

4°C

Humidity 65%
Wind Speed NA 4 MPH
Barometer NA
Dewpoint 29°F (-2°C)
Visibility NA
Wind Chill37°F (3°C)
Last update 02 Jan 10:10 PM MST
Extended Forecast for

St Mary MT

  • Tonight

    Tonight: Mostly cloudy, with a low around 32. South southwest wind around 6 mph.

    Low: 32 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 44. Southwest wind 6 to 13 mph, with gusts as high as 28 mph.

    High: 44 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain before 8pm, then a chance of rain and snow between 8pm and 5am, then a chance of rain after 5am. Partly cloudy, with a low around 36. Southwest wind 11 to 14 mph, with gusts as high as 32 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 36 °F

    Chance
    Rain/Snow

  • Sunday

    Sunday: A chance of rain before 8am, then a chance of rain and snow. Partly sunny, with a high near 42. Southwest wind 15 to 17 mph, with gusts as high as 36 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 42 °F

    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 31. West southwest wind around 15 mph, with gusts as high as 34 mph.

    Low: 31 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of snow. Partly sunny, with a high near 37. West southwest wind around 14 mph, with gusts as high as 30 mph.

    High: 37 °F

    Slight Chance
    Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 26. West southwest wind 13 to 16 mph, with gusts as high as 36 mph.

    Low: 26 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of snow after 11am. Mostly cloudy, with a high near 33. West southwest wind 17 to 20 mph, with gusts as high as 40 mph.

    High: 33 °F

    Slight Chance
    Snow

  • Tuesday Night

    Tuesday Night: A chance of snow. Mostly cloudy, with a low around 26.

    Low: 26 °F

    Chance Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 32. South southwest wind around 6 mph.
Saturday
Mostly sunny, with a high near 44. Southwest wind 6 to 13 mph, with gusts as high as 28 mph.
Saturday Night
A slight chance of rain before 8pm, then a chance of rain and snow between 8pm and 5am, then a chance of rain after 5am. Partly cloudy, with a low around 36. Southwest wind 11 to 14 mph, with gusts as high as 32 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday
A chance of rain before 8am, then a chance of rain and snow. Partly sunny, with a high near 42. Southwest wind 15 to 17 mph, with gusts as high as 36 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Sunday Night
A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 31. West southwest wind around 15 mph, with gusts as high as 34 mph.
Monday
A 20 percent chance of snow. Partly sunny, with a high near 37. West southwest wind around 14 mph, with gusts as high as 30 mph.
Monday Night
Mostly cloudy, with a low around 26. West southwest wind 13 to 16 mph, with gusts as high as 36 mph.
Tuesday
A slight chance of snow after 11am. Mostly cloudy, with a high near 33. West southwest wind 17 to 20 mph, with gusts as high as 40 mph.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 26.
Wednesday
A chance of snow. Partly sunny, with a high near 32.
Wednesday Night
A slight chance of snow. Mostly cloudy, with a low around 20.
Thursday
A slight chance of snow. Partly sunny, with a high near 29.
Thursday Night
Mostly cloudy, with a low around 17.
Friday
Mostly sunny, with a high near 29.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
St Mary MT
 48.74°N 113.44°W (Elev. 4554 ft)
Last Update:
10:32 pm MST Jan 2, 2026
Forecast Valid:
11pm MST Jan 2, 2026-6pm MST Jan 9, 2026
 
Forecast Discussion
 
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Additional Resources

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