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

21°F

-6°C

Humidity 75%
Wind Speed NA 4 MPH
Barometer NA
Dewpoint 14°F (-10°C)
Visibility NA
Wind Chill15°F (-9°C)
Last update 16 Apr 01:10 PM MDT
Extended Forecast for

St Mary MT

  • This Afternoon

    This Afternoon: Snow likely, mainly after 5pm. Mostly cloudy, with a high near 25. North wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. Total daytime snow accumulation of around an inch possible.

    High: 25 °F

    Snow Likely

  • Tonight

    Tonight: A 30 percent chance of snow, mainly before 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 17. North wind 5 to 7 mph becoming light and variable. New snow accumulation of less than a half inch possible.

    Low: 17 °F

    Chance Snow
    then Partly
    Cloudy

  • Friday

    Friday: A 40 percent chance of snow, mainly between 11am and 5pm. The snow could be heavy at times. Partly sunny, with a high near 38. South southwest wind 5 to 7 mph becoming north northwest in the afternoon. New snow accumulation of 1 to 2 inches possible.

    High: 38 °F

    Heavy Snow

  • Friday Night

    Friday Night: Mostly clear, with a low around 26. West southwest wind 5 to 7 mph.

    Low: 26 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 49. West southwest wind 8 to 11 mph, with gusts as high as 23 mph.

    High: 49 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 33. West southwest wind 7 to 9 mph, with gusts as high as 21 mph.

    Low: 33 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 58. West southwest wind 7 to 9 mph, with gusts as high as 20 mph.

    High: 58 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39. West southwest wind 6 to 9 mph, with gusts as high as 18 mph.

    Low: 39 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

Detailed Forecast

This Afternoon
Snow likely, mainly after 5pm. Mostly cloudy, with a high near 25. North wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. Total daytime snow accumulation of around an inch possible.
Tonight
A 30 percent chance of snow, mainly before 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 17. North wind 5 to 7 mph becoming light and variable. New snow accumulation of less than a half inch possible.
Friday
A 40 percent chance of snow, mainly between 11am and 5pm. The snow could be heavy at times. Partly sunny, with a high near 38. South southwest wind 5 to 7 mph becoming north northwest in the afternoon. New snow accumulation of 1 to 2 inches possible.
Friday Night
Mostly clear, with a low around 26. West southwest wind 5 to 7 mph.
Saturday
Sunny, with a high near 49. West southwest wind 8 to 11 mph, with gusts as high as 23 mph.
Saturday Night
Partly cloudy, with a low around 33. West southwest wind 7 to 9 mph, with gusts as high as 21 mph.
Sunday
Mostly sunny, with a high near 58. West southwest wind 7 to 9 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 39. West southwest wind 6 to 9 mph, with gusts as high as 18 mph.
Monday
Sunny, with a high near 66.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Sunny, with a high near 69.
Tuesday Night
A slight chance of rain. Partly cloudy, with a low around 44.
Wednesday
A chance of rain. Partly sunny, with a high near 63.
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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:
12:31 pm MDT Apr 16, 2026
Forecast Valid:
1pm MDT Apr 16, 2026-6pm MDT Apr 22, 2026
 
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