Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

ST. MARY (SRYM8)

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

NA

31°F

-1°C

Humidity 86%
Wind Speed N 2 MPH
Barometer NA
Dewpoint 27°F (-3°C)
Visibility NA
Last update 21 Mar 07:11 PM MDT
Extended Forecast for

7 Miles S St Mary MT

  • Tonight

    Tonight: A 20 percent chance of snow before 10pm.  Partly cloudy, with a low around 17. Wind chill values as low as zero. Windy, with a west southwest wind 28 to 33 mph, with gusts as high as 44 mph.

    Low: 17 °F

    Windy. Slight
    Chance Snow
    then Partly
    Cloudy

  • Sunday

    Sunday: Sunny, with a high near 26. Wind chill values as low as -5. Windy, with a west southwest wind 29 to 34 mph, with gusts as high as 48 mph.

    High: 26 °F

    Sunny and
    Windy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 19. Windy, with a west southwest wind 29 to 34 mph decreasing to 18 to 23 mph after midnight. Winds could gust as high as 46 mph.

    Low: 19 °F

    Partly Cloudy
    and Windy

  • Monday

    Monday: Mostly sunny, with a high near 33. Breezy, with a west southwest wind 18 to 25 mph, with gusts as high as 37 mph.

    High: 33 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 23. Breezy, with a west southwest wind 17 to 24 mph, with gusts as high as 32 mph.

    Low: 23 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Snow, mainly after noon.  High near 30. Breezy, with a west southwest wind 17 to 25 mph, with gusts as high as 36 mph.  Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 30 °F

    Chance Snow
    then Snow and
    Breezy

  • Tuesday Night

    Tuesday Night: Snow likely, mainly before midnight.  Mostly cloudy, with a low around 24. Windy, with a west southwest wind 24 to 32 mph, with gusts as high as 50 mph.  Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    Low: 24 °F

    Snow Likely
    and Windy

  • Wednesday

    Wednesday: A chance of snow.  Partly sunny, with a high near 28. Windy, with a west southwest wind 32 to 37 mph, with gusts as high as 60 mph.

    High: 28 °F

    Chance Snow
    and Windy

  • Wednesday Night

    Wednesday Night: A chance of snow.  Mostly cloudy, with a low around 15. Windy.

    Low: 15 °F

    Chance Snow
    and Windy

Detailed Forecast

Tonight
A 20 percent chance of snow before 10pm. Partly cloudy, with a low around 17. Wind chill values as low as zero. Windy, with a west southwest wind 28 to 33 mph, with gusts as high as 44 mph.
Sunday
Sunny, with a high near 26. Wind chill values as low as -5. Windy, with a west southwest wind 29 to 34 mph, with gusts as high as 48 mph.
Sunday Night
Partly cloudy, with a low around 19. Windy, with a west southwest wind 29 to 34 mph decreasing to 18 to 23 mph after midnight. Winds could gust as high as 46 mph.
Monday
Mostly sunny, with a high near 33. Breezy, with a west southwest wind 18 to 25 mph, with gusts as high as 37 mph.
Monday Night
Mostly cloudy, with a low around 23. Breezy, with a west southwest wind 17 to 24 mph, with gusts as high as 32 mph.
Tuesday
Snow, mainly after noon. High near 30. Breezy, with a west southwest wind 17 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Tuesday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 24. Windy, with a west southwest wind 24 to 32 mph, with gusts as high as 50 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Wednesday
A chance of snow. Partly sunny, with a high near 28. Windy, with a west southwest wind 32 to 37 mph, with gusts as high as 60 mph.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 15. Windy.
Thursday
A chance of snow. Partly sunny, with a high near 24. Breezy.
Thursday Night
A slight chance of snow. Partly cloudy, with a low around 14. Breezy.
Friday
Sunny, with a high near 28.
Friday Night
Mostly clear, with a low around 16.
Saturday
Mostly sunny, with a high near 33.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles S St Mary MT
 48.64°N 113.42°W (Elev. 7927 ft)
6:36 pm MDT Mar 21, 2026
8pm MDT Mar 21, 2026-6pm MDT Mar 28, 2026
 
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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