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

Hazardous Weather Conditions

Current conditions at

ST. MARY (SRYM8)

Lat: 48.74108°NLon: 113.43289°WElev: 4557.0ft.

NA

33°F

1°C

Humidity 81%
Wind Speed SW 17 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Wind Chill22°F (-6°C)
Last update 15 Apr 02:11 AM MDT
Extended Forecast for

St Mary MT

Winter Weather Advisory until April 16, 12:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until April 16, 12:00pm

    NOW until 12:00pm Thu

    Winter Weather Advisory

  • Overnight

    Low: 33 °F

    Chance Snow

  • Wednesday

    Wednesday: Snow likely, mainly before 3pm. Partly sunny, with a high near 45. Southwest wind 11 to 17 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 45 °F

    Snow Likely

  • Wednesday Night

    Wednesday Night: Snow likely, mainly after 11pm. Mostly cloudy, with a low around 18. West southwest wind around 10 mph becoming north after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 18 °F

    Snow Likely

  • Thursday

    Thursday: Snow likely, mainly before noon. Mostly cloudy, with a high near 35. North wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 35 °F

    Snow Likely

  • Thursday Night

    Thursday Night: A 20 percent chance of snow before midnight. Partly cloudy, with a low around 20. West southwest wind around 6 mph.

    Low: 20 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of snow, mainly after noon. Partly sunny, with a high near 41. West northwest wind 6 to 8 mph. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Chance Snow

  • Friday Night

    Friday Night: Partly cloudy, with a low around 25. West southwest wind 6 to 8 mph.

    Low: 25 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 48. West southwest wind 8 to 13 mph, with gusts as high as 25 mph.

    High: 48 °F

    Sunny

Detailed Forecast

Overnight
A 50 percent chance of snow. Mostly cloudy, with a low around 33. Southwest wind around 18 mph, with gusts as high as 41 mph. Total nighttime snow accumulation of less than one inch possible.
Wednesday
Snow likely, mainly before 3pm. Partly sunny, with a high near 45. Southwest wind 11 to 17 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Wednesday Night
Snow likely, mainly after 11pm. Mostly cloudy, with a low around 18. West southwest wind around 10 mph becoming north after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Thursday
Snow likely, mainly before noon. Mostly cloudy, with a high near 35. North wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Thursday Night
A 20 percent chance of snow before midnight. Partly cloudy, with a low around 20. West southwest wind around 6 mph.
Friday
A 40 percent chance of snow, mainly after noon. Partly sunny, with a high near 41. West northwest wind 6 to 8 mph. New snow accumulation of less than a half inch possible.
Friday Night
Partly cloudy, with a low around 25. West southwest wind 6 to 8 mph.
Saturday
Sunny, with a high near 48. West southwest wind 8 to 13 mph, with gusts as high as 25 mph.
Saturday Night
Partly cloudy, with a low around 33.
Sunday
Sunny, with a high near 57.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Mostly sunny, with a high near 61.
Monday Night
Mostly clear, with a low around 39.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 64.
Basemap Options
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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:
12:31 am MDT Apr 15, 2026
Forecast Valid:
2am MDT Apr 15, 2026-6pm MDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation