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

Hazardous Weather Conditions

Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

Lat: 48.74111°NLon: 113.43306°WElev: 4550.0ft.

NA

24°F

-4°C

Humidity 80%
Wind Speed NA 0 MPH
Barometer NA
Dewpoint 19°F (-7°C)
Visibility NA
Last update 01 Apr 06:10 AM MDT
Extended Forecast for

St Mary MT

Winter Weather Advisory April 2, 06:00am until April 3, 06:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Today

    Today: A 20 percent chance of rain after 4pm. Partly sunny, with a high near 49. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 49 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Tonight

    Tonight: Rain likely before 10pm, then rain and snow. Low around 31. South southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Rain/Snow

  • Thursday

    Thursday: Rain and snow, becoming all snow after 9am. High near 39. Light and variable wind becoming northwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    High: 39 °F

    Rain/Snow
    then Snow

  • Thursday Night

    Thursday Night: Snow, mainly before midnight. Low around 28. West wind 3 to 8 mph. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 28 °F

    Snow then
    Chance Snow

  • Friday

    Friday: Mostly sunny, with a high near 44. West southwest wind 5 to 9 mph, with gusts as high as 20 mph.

    High: 44 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 31. West southwest wind around 9 mph, with gusts as high as 21 mph.

    Low: 31 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 48. West southwest wind 9 to 11 mph, with gusts as high as 23 mph.

    High: 48 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 34. West southwest wind 6 to 10 mph, with gusts as high as 21 mph.

    Low: 34 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

Detailed Forecast

Today
A 20 percent chance of rain after 4pm. Partly sunny, with a high near 49. Calm wind becoming south southwest around 6 mph in the afternoon.
Tonight
Rain likely before 10pm, then rain and snow. Low around 31. South southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Thursday
Rain and snow, becoming all snow after 9am. High near 39. Light and variable wind becoming northwest 5 to 9 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Thursday Night
Snow, mainly before midnight. Low around 28. West wind 3 to 8 mph. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Friday
Mostly sunny, with a high near 44. West southwest wind 5 to 9 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 31. West southwest wind around 9 mph, with gusts as high as 21 mph.
Saturday
Mostly sunny, with a high near 48. West southwest wind 9 to 11 mph, with gusts as high as 23 mph.
Saturday Night
Partly cloudy, with a low around 34. West southwest wind 6 to 10 mph, with gusts as high as 21 mph.
Sunday
Partly sunny, with a high near 50.
Sunday Night
A slight chance of rain before 9pm, then a slight chance of rain and snow. Mostly cloudy, with a low around 33.
Monday
Partly sunny, with a high near 53.
Monday Night
Mostly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 57.
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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:
3:47 am MDT Apr 1, 2026
Forecast Valid:
7am MDT Apr 1, 2026-6pm MDT Apr 7, 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