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

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

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

NA

49°F

9°C

Humidity 62%
Wind Speed NA 11 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Wind Chill44°F (7°C)
Last update 20 Mar 08:10 AM MDT
Extended Forecast for

5 Miles SW St Mary MT

High Wind Warning until March 21, 12:00pm
Click here for hazard details and duration
High Wind Warning
  •  
    High Wind Warning until March 21, 12:00pm

    NOW until 12:00pm Sat

    High Wind Warning

  • Today

    High: 57 °F

    Rain Likely
    and Windy

  • Tonight

    Tonight: Rain.  Low around 41. Windy, with a southwest wind 29 to 37 mph, with gusts as high as 55 mph.  Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 41 °F

    Rain and
    Windy

  • Saturday

    Saturday: Rain and snow likely, becoming all snow after 3pm.  Cloudy, with a steady temperature around 44. Breezy, with a west southwest wind 21 to 28 mph, with gusts as high as 39 mph.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 44 °F

    Rain/Snow
    Likely and
    Breezy

  • Saturday Night

    Saturday Night: A 30 percent chance of snow before midnight.  Partly cloudy, with a low around 31. Breezy, with a west southwest wind 20 to 24 mph, with gusts as high as 36 mph.  Little or no snow accumulation expected.

    Low: 31 °F

    Breezy.
    Chance Snow
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 42. Breezy, with a west southwest wind 14 to 23 mph, with gusts as high as 48 mph.

    High: 42 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 28. Breezy, with a west southwest wind 19 to 24 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 48 mph.

    Low: 28 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Monday

    Monday: Partly sunny, with a high near 47. West southwest wind 11 to 16 mph, with gusts as high as 34 mph.

    High: 47 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30. Southwest wind 9 to 16 mph, with gusts as high as 32 mph.

    Low: 30 °F

    Mostly Cloudy

Detailed Forecast

Today
Rain likely, mainly before 1pm. Mostly cloudy, with a high near 57. Windy, with a west southwest wind around 38 mph, with gusts as high as 60 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain. Low around 41. Windy, with a southwest wind 29 to 37 mph, with gusts as high as 55 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Rain and snow likely, becoming all snow after 3pm. Cloudy, with a steady temperature around 44. Breezy, with a west southwest wind 21 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Saturday Night
A 30 percent chance of snow before midnight. Partly cloudy, with a low around 31. Breezy, with a west southwest wind 20 to 24 mph, with gusts as high as 36 mph. Little or no snow accumulation expected.
Sunday
Sunny, with a high near 42. Breezy, with a west southwest wind 14 to 23 mph, with gusts as high as 48 mph.
Sunday Night
Partly cloudy, with a low around 28. Breezy, with a west southwest wind 19 to 24 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 48 mph.
Monday
Partly sunny, with a high near 47. West southwest wind 11 to 16 mph, with gusts as high as 34 mph.
Monday Night
Mostly cloudy, with a low around 30. Southwest wind 9 to 16 mph, with gusts as high as 32 mph.
Tuesday
A chance of snow before noon, then rain and snow likely between noon and 3pm, then rain likely after 3pm. Mostly cloudy, with a high near 48.
Tuesday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 36. Breezy.
Wednesday
A chance of rain and snow. Partly sunny, with a high near 45. Breezy.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 24. Breezy.
Thursday
A chance of snow. Partly sunny, with a high near 39.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW St Mary MT
 48.69°N 113.52°W (Elev. 4491 ft)
4:01 am MDT Mar 20, 2026
8am MDT Mar 20, 2026-6pm MDT Mar 26, 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