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

51°F

11°C

Humidity 51%
Wind Speed NA 17 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 20 Mar 12:10 PM MDT
Extended Forecast for

5 Miles SW St Mary MT

High Wind Warning March 20, 01:14pm until March 21, 12:00pm
Click here for hazard details and duration
High Wind Warning
  •  
    High Wind Warning March 20, 01:14pm until March 21, 12:00pm

    NOW until 12:00pm Sat

    High Wind Warning

  • This Afternoon

    High: 56 °F

    Rain Likely
    and Windy

  • Tonight

    Tonight: Rain, mainly before 5am.  Low around 39. Breezy, with a southwest wind 15 to 24 mph, with gusts as high as 50 mph.  Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Rain and
    Breezy

  • Saturday

    Saturday: A chance of rain and snow before 7am, then a chance of rain between 7am and 10am, then a chance of rain and snow after 10am.  Partly sunny, with a high near 46. West southwest wind 13 to 15 mph, with gusts as high as 33 mph.  Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 46 °F

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: A slight chance of rain and snow before 9pm, then a slight chance of snow between 9pm and midnight.  Partly cloudy, with a low around 28. West southwest wind 11 to 14 mph, with gusts as high as 31 mph.  Chance of precipitation is 20%.

    Low: 28 °F

    Slight Chance
    Rain/Snow
    then Partly
    Cloudy

  • Sunday

    Sunday: Sunny, with a high near 43. West southwest wind 11 to 21 mph, with gusts as high as 45 mph.

    High: 43 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 29. Breezy, with a west southwest wind 17 to 22 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 46 mph.

    Low: 29 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 48. West southwest wind 9 to 15 mph, with gusts as high as 32 mph.

    High: 48 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 31. West southwest wind 9 to 16 mph, with gusts as high as 31 mph.

    Low: 31 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Rain likely, mainly after 3pm. Patchy blowing dust before 4pm. Mostly cloudy, with a high near 56. Windy, with a west southwest wind 25 to 31 mph, with gusts as high as 65 mph. Chance of precipitation is 60%.
Tonight
Rain, mainly before 5am. Low around 39. Breezy, with a southwest wind 15 to 24 mph, with gusts as high as 50 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
A chance of rain and snow before 7am, then a chance of rain between 7am and 10am, then a chance of rain and snow after 10am. Partly sunny, with a high near 46. West southwest wind 13 to 15 mph, with gusts as high as 33 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Saturday Night
A slight chance of rain and snow before 9pm, then a slight chance of snow between 9pm and midnight. Partly cloudy, with a low around 28. West southwest wind 11 to 14 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 43. West southwest wind 11 to 21 mph, with gusts as high as 45 mph.
Sunday Night
Partly cloudy, with a low around 29. Breezy, with a west southwest wind 17 to 22 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 46 mph.
Monday
Mostly sunny, with a high near 48. West southwest wind 9 to 15 mph, with gusts as high as 32 mph.
Monday Night
Mostly cloudy, with a low around 31. West southwest wind 9 to 16 mph, with gusts as high as 31 mph.
Tuesday
A chance of snow before 3pm, then a chance of rain. Mostly cloudy, with a high near 48.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 35. Breezy.
Wednesday
A chance of rain and snow. Partly sunny, with a high near 45. Breezy.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 25. Breezy.
Thursday
A chance of snow. Partly sunny, with a high near 38.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW St Mary MT
 48.69°N 113.52°W (Elev. 4491 ft)
12:56 pm MDT Mar 20, 2026
1pm MDT Mar 20, 2026-6pm MDT Mar 26, 2026
 
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Additional Resources

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