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

28°F

-2°C

Humidity 85%
Wind Speed NA 0 MPH
Barometer NA
Dewpoint 24°F (-4°C)
Visibility NA
Last update 03 Apr 05:10 AM MDT
Extended Forecast for

St Mary MT

  • Today

    Today: Sunny, with a high near 44. West southwest wind 6 to 11 mph, with gusts as high as 24 mph.

    High: 44 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 31. Southwest wind around 11 mph, with gusts as high as 25 mph.

    Low: 31 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 48. West wind around 10 mph, with gusts as high as 22 mph.

    High: 48 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 29. West wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 20 mph.

    Low: 29 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 48. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 48 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 30. East wind 3 to 6 mph.

    Low: 30 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 55. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 55 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 39. Southwest wind 7 to 10 mph, with gusts as high as 23 mph.

    Low: 39 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain after noon. Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny
    then Slight
    Chance Rain

Detailed Forecast

Today
Sunny, with a high near 44. West southwest wind 6 to 11 mph, with gusts as high as 24 mph.
Tonight
Partly cloudy, with a low around 31. Southwest wind around 11 mph, with gusts as high as 25 mph.
Saturday
Mostly sunny, with a high near 48. West wind around 10 mph, with gusts as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 29. West wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 20 mph.
Sunday
Partly sunny, with a high near 48. Calm wind becoming east southeast around 6 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 30. East wind 3 to 6 mph.
Monday
Partly sunny, with a high near 55. Calm wind becoming south 5 to 8 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 39. Southwest wind 7 to 10 mph, with gusts as high as 23 mph.
Tuesday
A slight chance of rain after noon. Mostly sunny, with a high near 53.
Tuesday Night
A chance of rain before 9pm, then a chance of rain and snow between 9pm and midnight, then a chance of snow after midnight. Mostly cloudy, with a low around 26.
Wednesday
A chance of snow. Partly sunny, with a high near 36.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 18.
Thursday
A chance of snow. Partly sunny, with a high near 39.
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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:
5:47 am MDT Apr 3, 2026
Forecast Valid:
6am MDT Apr 3, 2026-6pm MDT Apr 9, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation