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

44°F

7°C

Humidity 42%
Wind Speed NA 10 MPH
Barometer NA
Dewpoint 22°F (-6°C)
Visibility NA
Wind Chill39°F (4°C)
Last update 04 Apr 11:10 AM MDT
Extended Forecast for

St Mary MT

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 48. West southwest wind around 11 mph, with gusts as high as 24 mph.

    High: 48 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 30. West southwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 20 mph.

    Low: 30 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of snow before noon, then a slight chance of rain and snow between noon and 3pm, then a slight chance of rain after 3pm. Mostly cloudy, with a high near 49. Calm wind becoming east southeast around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 49 °F

    Slight Chance
    Snow then
    Slight Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 31. East southeast wind 3 to 6 mph.

    Low: 31 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 56. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 56 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 40. Southwest wind 7 to 11 mph, with gusts as high as 26 mph.

    Low: 40 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of rain and snow after noon. Mostly sunny, with a high near 51. Breezy, with a west southwest wind 15 to 25 mph, with gusts as high as 50 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 51 °F

    Breezy.
    Mostly Sunny
    then Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A chance of rain and snow before 9pm, then a chance of snow. Mostly cloudy, with a low around 25. West wind 8 to 18 mph, with gusts as high as 37 mph.

    Low: 25 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Wednesday

    Wednesday: A chance of snow. Partly sunny, with a high near 36.

    High: 36 °F

    Chance Snow

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 48. West southwest wind around 11 mph, with gusts as high as 24 mph.
Tonight
Partly cloudy, with a low around 30. West southwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Sunday
A slight chance of snow before noon, then a slight chance of rain and snow between noon and 3pm, then a slight chance of rain after 3pm. Mostly cloudy, with a high near 49. Calm wind becoming east southeast around 6 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 31. East southeast wind 3 to 6 mph.
Monday
Partly sunny, with a high near 56. Calm wind becoming south 5 to 7 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 40. Southwest wind 7 to 11 mph, with gusts as high as 26 mph.
Tuesday
A chance of rain and snow after noon. Mostly sunny, with a high near 51. Breezy, with a west southwest wind 15 to 25 mph, with gusts as high as 50 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Tuesday Night
A chance of rain and snow before 9pm, then a chance of snow. Mostly cloudy, with a low around 25. West wind 8 to 18 mph, with gusts as high as 37 mph.
Wednesday
A chance of snow. Partly sunny, with a high near 36.
Wednesday Night
A chance of snow, mainly before midnight. Mostly cloudy, with a low around 21.
Thursday
A slight chance of snow. Mostly sunny, with a high near 42.
Thursday Night
A slight chance of snow. Partly cloudy, with a low around 24.
Friday
Mostly sunny, with a high near 45.
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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:
9:06 am MDT Apr 4, 2026
Forecast Valid:
12pm MDT Apr 4, 2026-6pm MDT Apr 10, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation