Lake Effect Snow in the Lower Great Lakes; Unsettled Pattern in the Pacific Northwest

Lake-effect snow will continue downwind of Lakes Erie and Ontario through Friday. Lake Effect Snow Warnings have been issued. In the Western U.S., rain and higher elevation snow will continue over the Great Basin through Friday. A front will move over the Pacific Northwest this afternoon and produce light rain and higher elevation snow over the Cascades through Saturday. 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 25%
Wind Speed NA 12 MPH
Barometer NA
Dewpoint 7°F (-14°C)
Visibility NA
Wind Chill33°F (1°C)
Last update 12 Feb 02:10 PM MST
Extended Forecast for

St Mary MT

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 41. Southwest wind around 15 mph, with gusts as high as 31 mph.

    High: 41 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 32. Southwest wind 13 to 15 mph, with gusts as high as 32 mph.

    Low: 32 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 40. Southwest wind 10 to 13 mph, with gusts as high as 25 mph.

    High: 40 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of snow after 11pm.  Mostly cloudy, with a low around 32. Southwest wind around 10 mph, with gusts as high as 23 mph.

    Low: 32 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: A 40 percent chance of snow.  Partly sunny, with a high near 41. West southwest wind 9 to 14 mph, with gusts as high as 28 mph.  Little or no snow accumulation expected.

    High: 41 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 40 percent chance of snow, mainly after 11pm.  Mostly cloudy, with a low around 28. West southwest wind 5 to 11 mph, with gusts as high as 25 mph.  New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Chance Snow

  • Sunday

    Sunday: A 50 percent chance of snow.  Partly sunny, with a high near 40. Light west southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 23 mph.  New snow accumulation of less than a half inch possible.

    High: 40 °F

    Chance Snow

  • Sunday Night

    Sunday Night: A slight chance of snow.  Mostly cloudy, with a low around 28. Southwest wind 8 to 10 mph, with gusts as high as 23 mph.

    Low: 28 °F

    Slight Chance
    Snow

  • Washington's Birthday

    Washington's Birthday: A chance of snow, mainly after 11am.  Partly sunny, with a high near 39.

    High: 39 °F

    Chance Snow

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 41. Southwest wind around 15 mph, with gusts as high as 31 mph.
Tonight
Mostly cloudy, with a low around 32. Southwest wind 13 to 15 mph, with gusts as high as 32 mph.
Friday
Mostly cloudy, with a high near 40. Southwest wind 10 to 13 mph, with gusts as high as 25 mph.
Friday Night
A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 32. Southwest wind around 10 mph, with gusts as high as 23 mph.
Saturday
A 40 percent chance of snow. Partly sunny, with a high near 41. West southwest wind 9 to 14 mph, with gusts as high as 28 mph. Little or no snow accumulation expected.
Saturday Night
A 40 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 28. West southwest wind 5 to 11 mph, with gusts as high as 25 mph. New snow accumulation of less than a half inch possible.
Sunday
A 50 percent chance of snow. Partly sunny, with a high near 40. Light west southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 23 mph. New snow accumulation of less than a half inch possible.
Sunday Night
A slight chance of snow. Mostly cloudy, with a low around 28. Southwest wind 8 to 10 mph, with gusts as high as 23 mph.
Washington's Birthday
A chance of snow, mainly after 11am. Partly sunny, with a high near 39.
Monday Night
A chance of snow. Mostly cloudy, with a low around 21.
Tuesday
Snow. Mostly cloudy, with a high near 30.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 14.
Wednesday
A chance of snow. Mostly cloudy, with a high near 30.
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ABOUT THIS FORECAST

 
Point Forecast:
St Mary MT
 48.74°N 113.44°W (Elev. 4554 ft)
11:31 am MST Feb 12, 2026
2pm MST Feb 12, 2026-6pm MST Feb 18, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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