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

47°F

8°C

Humidity 14%
Wind Speed NA 12 MPH
Barometer NA
Dewpoint 0°F (-18°C)
Visibility NA
Wind Chill42°F (6°C)
Last update 27 Mar 03:10 PM MDT
Extended Forecast for

5 Miles WSW St Mary MT

  • Tonight

    Tonight: Mostly clear, with a low around 25. Breezy, with a west southwest wind 20 to 24 mph, with gusts as high as 45 mph.

    Low: 25 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: Mostly sunny, with a high near 36. West southwest wind 15 to 18 mph, with gusts as high as 31 mph.

    High: 36 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of snow, mainly between 2am and 5am. Mostly cloudy, with a low around 22. West southwest wind 10 to 17 mph, with gusts as high as 30 mph. Little or no snow accumulation expected.

    Low: 22 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: A 50 percent chance of snow, mainly after noon. Partly sunny, with a high near 31. Breezy, with a west southwest wind 14 to 19 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 40 mph. New snow accumulation of around an inch possible.

    High: 31 °F

    Slight Chance
    Snow then
    Chance Snow
    and Breezy

  • Sunday Night

    Sunday Night: Snow. Low around 19. Breezy, with a west southwest wind around 26 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    Low: 19 °F

    Snow and
    Breezy

  • Monday

    Monday: Snow. High near 22. Breezy, with a west wind around 23 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    High: 22 °F

    Snow and
    Breezy

  • Monday Night

    Monday Night: A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 6. Blustery, with a west southwest wind 18 to 23 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 32 mph. New snow accumulation of around an inch possible.

    Low: 6 °F

    Chance Snow
    and Blustery

  • Tuesday

    Tuesday: A slight chance of snow before noon. Mostly sunny, with a high near 25. Southwest wind 11 to 16 mph, with gusts as high as 26 mph.

    High: 25 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 25. Breezy, with a west southwest wind 20 to 24 mph, with gusts as high as 45 mph.
Saturday
Mostly sunny, with a high near 36. West southwest wind 15 to 18 mph, with gusts as high as 31 mph.
Saturday Night
A 30 percent chance of snow, mainly between 2am and 5am. Mostly cloudy, with a low around 22. West southwest wind 10 to 17 mph, with gusts as high as 30 mph. Little or no snow accumulation expected.
Sunday
A 50 percent chance of snow, mainly after noon. Partly sunny, with a high near 31. Breezy, with a west southwest wind 14 to 19 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 40 mph. New snow accumulation of around an inch possible.
Sunday Night
Snow. Low around 19. Breezy, with a west southwest wind around 26 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Monday
Snow. High near 22. Breezy, with a west wind around 23 mph, with gusts as high as 39 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Monday Night
A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 6. Blustery, with a west southwest wind 18 to 23 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 32 mph. New snow accumulation of around an inch possible.
Tuesday
A slight chance of snow before noon. Mostly sunny, with a high near 25. Southwest wind 11 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly cloudy, with a low around 16.
Wednesday
A chance of snow, mainly after noon. Partly sunny, with a high near 32.
Wednesday Night
Snow likely. Mostly cloudy, with a low around 23.
Thursday
Snow likely. Mostly cloudy, with a high near 26. Breezy.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 18. Breezy.
Friday
A chance of snow. Partly sunny, with a high near 25. 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:
12:31 pm MDT Mar 27, 2026
Forecast Valid:
3pm MDT Mar 27, 2026-6pm MDT Apr 3, 2026
 
Forecast Discussion
 
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