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

Critical Fire Weather in the Southern Plains; Severe Storms in the Ohio Valley

Strong winds and low humidity will create elevated to critical fire weather conditions across the Southern Plains on Thursday. Strong to severe thunderstorms are forecast in the Ohio Valley late Thursday into Friday morning, with the strongest storms capable of producing very large hail, damaging winds, and a few tornadoes. Read More >

Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

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

NA

25°F

-4°C

Humidity 86%
Wind Speed NA 3 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Last update 26 Mar 02:10 AM MDT
Extended Forecast for

St Mary MT

  • Overnight

    Overnight: A 40 percent chance of snow, mainly before 5am. Mostly cloudy, with a low around 19. Southwest wind around 8 mph, with gusts as high as 20 mph. Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 19 °F

    Chance Snow

  • Thursday

    Thursday: A 30 percent chance of snow, mainly before 1pm. Mostly sunny, with a high near 35. West wind 9 to 15 mph, with gusts as high as 25 mph. Little or no snow accumulation expected.

    High: 35 °F

    Chance Snow

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 22. West wind 7 to 10 mph becoming south southwest after midnight. Winds could gust as high as 25 mph.

    Low: 22 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 46. Southwest wind 7 to 10 mph, with gusts as high as 23 mph.

    High: 46 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 32. Southwest wind 6 to 9 mph, with gusts as high as 21 mph.

    Low: 32 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 51. West southwest wind 6 to 9 mph, with gusts as high as 22 mph.

    High: 51 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 30. West southwest wind 5 to 9 mph, with gusts as high as 21 mph.

    Low: 30 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of snow after noon. Partly sunny, with a high near 46. West wind 5 to 10 mph, with gusts as high as 23 mph.

    High: 46 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: A chance of rain and snow before midnight, then a chance of snow. Mostly cloudy, with a low around 31.

    Low: 31 °F

    Chance
    Rain/Snow
    then Chance
    Snow

Detailed Forecast

Overnight
A 40 percent chance of snow, mainly before 5am. Mostly cloudy, with a low around 19. Southwest wind around 8 mph, with gusts as high as 20 mph. Total nighttime snow accumulation of 1 to 2 inches possible.
Thursday
A 30 percent chance of snow, mainly before 1pm. Mostly sunny, with a high near 35. West wind 9 to 15 mph, with gusts as high as 25 mph. Little or no snow accumulation expected.
Thursday Night
Mostly clear, with a low around 22. West wind 7 to 10 mph becoming south southwest after midnight. Winds could gust as high as 25 mph.
Friday
Mostly sunny, with a high near 46. Southwest wind 7 to 10 mph, with gusts as high as 23 mph.
Friday Night
Partly cloudy, with a low around 32. Southwest wind 6 to 9 mph, with gusts as high as 21 mph.
Saturday
Mostly sunny, with a high near 51. West southwest wind 6 to 9 mph, with gusts as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 30. West southwest wind 5 to 9 mph, with gusts as high as 21 mph.
Sunday
A slight chance of snow after noon. Partly sunny, with a high near 46. West wind 5 to 10 mph, with gusts as high as 23 mph.
Sunday Night
A chance of rain and snow before midnight, then a chance of snow. Mostly cloudy, with a low around 31.
Monday
A chance of snow. Partly sunny, with a high near 44.
Monday Night
A chance of snow. Mostly cloudy, with a low around 24.
Tuesday
A chance of snow. Partly sunny, with a high near 37.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 18.
Wednesday
A chance of snow. Partly sunny, with a high near 38.
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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:
3:16 am MDT Mar 26, 2026
Forecast Valid:
3am MDT Mar 26, 2026-6pm MDT Apr 1, 2026
 
Forecast Discussion
 
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Additional Resources

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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