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

Heavy Rain Across the Southern US; Unsettled Pattern in the Pacific Northwest

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains Friday, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. High elevation snow and mixed precipitation and rain in the lower elevations will impact the Pacific Northwest this weekend before a stronger system moves in early next week. Read More >

Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

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

NA

37°F

3°C

Humidity 43%
Wind Speed NA 14 MPH
Barometer NA
Dewpoint 16°F (-9°C)
Visibility NA
Wind Chill28°F (-2°C)
Last update 12 Feb 11:10 PM MST
Extended Forecast for

St Mary MT

  • Tonight

    Tonight: Mostly clear, with a low around 32. South southwest wind around 16 mph, with gusts as high as 34 mph.

    Low: 32 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 40. Southwest wind 10 to 14 mph, with gusts as high as 28 mph.

    High: 40 °F

    Partly Sunny

  • Friday Night

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

    Low: 32 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: A 40 percent chance of snow. Partly sunny, with a high near 41. West southwest wind 10 to 14 mph, with gusts as high as 30 mph. Little or no snow accumulation expected.

    High: 41 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 29. West southwest wind 6 to 13 mph, with gusts as high as 26 mph. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Chance Snow

  • Sunday

    Sunday: A 40 percent chance of snow. Partly sunny, with a high near 40. West southwest wind 6 to 11 mph, with gusts as high as 25 mph. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Chance Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow. Partly cloudy, with a low around 29. Southwest wind 7 to 10 mph, with gusts as high as 25 mph.

    Low: 29 °F

    Slight Chance
    Snow

  • Washington's Birthday

    Washington's Birthday: A chance of snow, mainly after 11am. Partly sunny, with a high near 44. Southwest wind 6 to 8 mph.

    High: 44 °F

    Chance Snow

  • Monday Night

    Monday Night: A chance of snow. Mostly cloudy, with a low around 20.

    Low: 20 °F

    Chance Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 32. South southwest wind around 16 mph, with gusts as high as 34 mph.
Friday
Partly sunny, with a high near 40. Southwest wind 10 to 14 mph, with gusts as high as 28 mph.
Friday Night
A 20 percent chance of snow after midnight. 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 10 to 14 mph, with gusts as high as 30 mph. Little or no snow accumulation expected.
Saturday Night
A 30 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 29. West southwest wind 6 to 13 mph, with gusts as high as 26 mph. New snow accumulation of less than a half inch possible.
Sunday
A 40 percent chance of snow. Partly sunny, with a high near 40. West southwest wind 6 to 11 mph, with gusts as high as 25 mph. New snow accumulation of less than a half inch possible.
Sunday Night
A 20 percent chance of snow. Partly cloudy, with a low around 29. Southwest wind 7 to 10 mph, with gusts as high as 25 mph.
Washington's Birthday
A chance of snow, mainly after 11am. Partly sunny, with a high near 44. Southwest wind 6 to 8 mph.
Monday Night
A chance of snow. Mostly cloudy, with a low around 20.
Tuesday
Snow. Mostly cloudy, with a high near 29.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 13.
Wednesday
A chance of snow. Mostly cloudy, with a high near 31.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 18.
Thursday
A chance of snow. Mostly cloudy, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
St Mary MT
 48.74°N 113.44°W (Elev. 4554 ft)
Last Update:
11:32 pm MST Feb 12, 2026
Forecast Valid:
11pm MST Feb 12, 2026-6pm MST Feb 19, 2026
 
Forecast Discussion
 
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Additional Resources

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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