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

22°F

-6°C

Humidity 82%
Wind Speed NA 2 MPH
Barometer NA
Dewpoint 17°F (-8°C)
Visibility NA
Last update 08 Apr 03:10 AM MDT
Extended Forecast for

St Mary MT

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 28. North wind around 7 mph.

    Low: 28 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 48. North wind 5 to 7 mph becoming south southwest in the afternoon.

    High: 48 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of snow between 2am and 5am. Partly cloudy, with a low around 27. Southwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 27 °F

    Partly Cloudy
    then Slight
    Chance Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 50. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 50 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 31. South southeast wind 3 to 5 mph.

    Low: 31 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 61. South southwest wind 3 to 6 mph.

    High: 61 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38. South southwest wind 3 to 6 mph.

    Low: 38 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of rain after noon. Partly sunny, with a high near 63. South southwest wind 3 to 8 mph. Winds could gust as high as 18 mph.

    High: 63 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: A chance of rain. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Chance Rain

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 28. North wind around 7 mph.
Wednesday
Mostly sunny, with a high near 48. North wind 5 to 7 mph becoming south southwest in the afternoon.
Wednesday Night
A slight chance of snow between 2am and 5am. Partly cloudy, with a low around 27. Southwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 50. Calm wind becoming southeast around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 31. South southeast wind 3 to 5 mph.
Friday
Sunny, with a high near 61. South southwest wind 3 to 6 mph.
Friday Night
Partly cloudy, with a low around 38. South southwest wind 3 to 6 mph.
Saturday
A slight chance of rain after noon. Partly sunny, with a high near 63. South southwest wind 3 to 8 mph. Winds could gust as high as 18 mph.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 38.
Sunday
A chance of rain. Partly sunny, with a high near 48.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 29.
Monday
A chance of rain and snow. Mostly cloudy, with a high near 42.
Monday Night
A chance of rain and snow. Mostly cloudy, with a low around 28.
Tuesday
Partly sunny, with a high near 48.
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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:
1:22 am MDT Apr 8, 2026
Forecast Valid:
3am MDT Apr 8, 2026-6pm MDT Apr 14, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation