National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
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 48%
Wind Speed NA 2 MPH
Barometer NA
Dewpoint 19°F (-7°C)
Visibility NA
Last update 31 Mar 06:10 PM MDT
Extended Forecast for

5 Miles WSW St Mary MT

  • Tonight

    Tonight: Mostly cloudy, with a low around 18. Southwest wind 7 to 9 mph.

    Low: 18 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of snow, mainly between 3pm and 5pm. Mostly cloudy, with a high near 34. Southwest wind 7 to 11 mph, with gusts as high as 20 mph. Little or no snow accumulation expected.

    High: 34 °F

    Partly Sunny
    then Chance
    Snow

  • Wednesday Night

    Wednesday Night: Snow. Low around 24. South wind 7 to 9 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 24 °F

    Snow

  • Thursday

    Thursday: Snow. The snow could be heavy at times. High near 25. Northwest wind 9 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    High: 25 °F

    Heavy Snow

  • Thursday Night

    Thursday Night: Snow, mainly before midnight. Low around 19. North northwest wind 9 to 15 mph becoming west after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 19 °F

    Snow then
    Chance Snow

  • Friday

    Friday: A 20 percent chance of snow. Partly sunny, with a high near 31. West southwest wind 13 to 18 mph, with gusts as high as 31 mph.

    High: 31 °F

    Slight Chance
    Snow

  • Friday Night

    Friday Night: Partly cloudy, with a low around 23. Breezy, with a west southwest wind around 23 mph, with gusts as high as 32 mph.

    Low: 23 °F

    Partly Cloudy
    and Breezy

  • Saturday

    Saturday: Mostly sunny, with a high near 36. Breezy, with a west southwest wind around 24 mph, with gusts as high as 36 mph.

    High: 36 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 28. Breezy.

    Low: 28 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 18. Southwest wind 7 to 9 mph.
Wednesday
A 30 percent chance of snow, mainly between 3pm and 5pm. Mostly cloudy, with a high near 34. Southwest wind 7 to 11 mph, with gusts as high as 20 mph. Little or no snow accumulation expected.
Wednesday Night
Snow. Low around 24. South wind 7 to 9 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Thursday
Snow. The snow could be heavy at times. High near 25. Northwest wind 9 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Thursday Night
Snow, mainly before midnight. Low around 19. North northwest wind 9 to 15 mph becoming west after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Friday
A 20 percent chance of snow. Partly sunny, with a high near 31. West southwest wind 13 to 18 mph, with gusts as high as 31 mph.
Friday Night
Partly cloudy, with a low around 23. Breezy, with a west southwest wind around 23 mph, with gusts as high as 32 mph.
Saturday
Mostly sunny, with a high near 36. Breezy, with a west southwest wind around 24 mph, with gusts as high as 36 mph.
Saturday Night
Partly cloudy, with a low around 28. Breezy.
Sunday
A slight chance of snow after noon. Partly sunny, with a high near 39.
Sunday Night
A slight chance of snow. Mostly cloudy, with a low around 26.
Monday
A slight chance of snow. Partly sunny, with a high near 39.
Monday Night
Mostly cloudy, with a low around 28.
Tuesday
A slight chance of rain and snow. Mostly sunny, with a high near 42. Breezy.
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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:
4:22 pm MDT Mar 31, 2026
Forecast Valid:
6pm MDT Mar 31, 2026-6pm MDT Apr 7, 2026
 
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Additional Resources

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Chance of Precipitation