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 WSW 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: 42 °F

    Rain Likely
    and Windy

  • Tonight

    Tonight: Rain, possibly mixed with snow.  Low around 40. Windy, with a southwest wind 31 to 41 mph, with gusts as high as 65 mph.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 40 °F

    Windy. Rain
    Likely then
    Rain/Snow

  • Saturday

    Saturday: Snow likely, mainly before 11am.  Cloudy, with a temperature falling to around 35 by 5pm. Windy, with a west southwest wind 21 to 30 mph, with gusts as high as 41 mph.  Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    High: 40 °F

    Snow Likely
    and Windy

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before midnight.  Partly cloudy, with a low around 21. Breezy, with a west southwest wind 20 to 29 mph, with gusts as high as 41 mph.

    Low: 21 °F

    Breezy.
    Slight Chance
    Snow then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 30. Windy, with a west southwest wind 20 to 25 mph increasing to 28 to 33 mph in the afternoon. Winds could gust as high as 55 mph.

    High: 30 °F

    Sunny and
    Windy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 22. Windy, with a west southwest wind 28 to 33 mph decreasing to 18 to 23 mph after midnight. Winds could gust as high as 55 mph.

    Low: 22 °F

    Partly Cloudy
    and Windy
    then Partly
    Cloudy

  • Monday

    Monday: Partly sunny, with a high near 34. Breezy, with a west southwest wind 17 to 23 mph, with gusts as high as 40 mph.

    High: 34 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 23. Breezy, with a west southwest wind 16 to 25 mph, with gusts as high as 38 mph.

    Low: 23 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

Detailed Forecast

Today
Rain likely, mainly before 11am. Mostly cloudy, with a high near 42. Windy, with a west southwest wind 41 to 44 mph, with gusts as high as 70 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Rain, possibly mixed with snow. Low around 40. Windy, with a southwest wind 31 to 41 mph, with gusts as high as 65 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Saturday
Snow likely, mainly before 11am. Cloudy, with a temperature falling to around 35 by 5pm. Windy, with a west southwest wind 21 to 30 mph, with gusts as high as 41 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Saturday Night
A 20 percent chance of snow before midnight. Partly cloudy, with a low around 21. Breezy, with a west southwest wind 20 to 29 mph, with gusts as high as 41 mph.
Sunday
Sunny, with a high near 30. Windy, with a west southwest wind 20 to 25 mph increasing to 28 to 33 mph in the afternoon. Winds could gust as high as 55 mph.
Sunday Night
Partly cloudy, with a low around 22. Windy, with a west southwest wind 28 to 33 mph decreasing to 18 to 23 mph after midnight. Winds could gust as high as 55 mph.
Monday
Partly sunny, with a high near 34. Breezy, with a west southwest wind 17 to 23 mph, with gusts as high as 40 mph.
Monday Night
Mostly cloudy, with a low around 23. Breezy, with a west southwest wind 16 to 25 mph, with gusts as high as 38 mph.
Tuesday
A chance of snow. Mostly cloudy, with a high near 35. Breezy.
Tuesday Night
A chance of rain and snow before 3am, then a chance of snow. Mostly cloudy, with a low around 29. Windy.
Wednesday
A chance of snow. Partly sunny, with a high near 33. Windy.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 17. Windy.
Thursday
A chance of snow. Partly sunny, with a high near 27. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW St Mary MT
 48.73°N 113.53°W (Elev. 6778 ft)
4:01 am MDT Mar 20, 2026
8am MDT Mar 20, 2026-6pm MDT Mar 26, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database