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

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 >

Hazardous Weather Conditions

Current conditions at

MANY GLACIER (MANM8)

Lat: 48.79698°NLon: 113.6705°WElev: 4900.0ft.

NA

46°F

8°C

Humidity 76%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Last update 20 Mar 05:00 AM MDT
Extended Forecast for

12 Miles W 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/Snow
    Likely and
    Windy

  • Tonight

    Tonight: Rain. Low around 34. Windy, with a southwest wind 25 to 33 mph, with gusts as high as 50 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 34 °F

    Rain and
    Windy

  • Saturday

    Saturday: Rain likely before 9am, then rain and snow likely between 9am and noon, then snow likely after noon. Cloudy, with a high near 39. Breezy, with a west southwest wind 20 to 24 mph, with gusts as high as 33 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    High: 39 °F

    Breezy.
    Rain/Snow
    Likely then
    Snow Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of snow before midnight. Partly cloudy, with a low around 25. Breezy, with a west southwest wind 17 to 24 mph, with gusts as high as 33 mph. New snow accumulation of less than one inch possible.

    Low: 25 °F

    Breezy.
    Chance Snow
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny, with a high near 34. Breezy, with a west southwest wind 16 to 26 mph, with gusts as high as 44 mph.

    High: 34 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 24. Breezy, with a west southwest wind 21 to 26 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 44 mph.

    Low: 24 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Monday

    Monday: Partly sunny, with a high near 39. West southwest wind 14 to 18 mph, with gusts as high as 32 mph.

    High: 39 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 26. West southwest wind 10 to 17 mph, with gusts as high as 31 mph.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Today
Rain likely, possibly mixed with snow, becoming all rain after 1pm. Cloudy, with a high near 42. Windy, with a southwest wind 32 to 34 mph, with gusts as high as 49 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Tonight
Rain. Low around 34. Windy, with a southwest wind 25 to 33 mph, with gusts as high as 50 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday
Rain likely before 9am, then rain and snow likely between 9am and noon, then snow likely after noon. Cloudy, with a high near 39. Breezy, with a west southwest wind 20 to 24 mph, with gusts as high as 33 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Saturday Night
A 30 percent chance of snow before midnight. Partly cloudy, with a low around 25. Breezy, with a west southwest wind 17 to 24 mph, with gusts as high as 33 mph. New snow accumulation of less than one inch possible.
Sunday
Sunny, with a high near 34. Breezy, with a west southwest wind 16 to 26 mph, with gusts as high as 44 mph.
Sunday Night
Partly cloudy, with a low around 24. Breezy, with a west southwest wind 21 to 26 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 44 mph.
Monday
Partly sunny, with a high near 39. West southwest wind 14 to 18 mph, with gusts as high as 32 mph.
Monday Night
Mostly cloudy, with a low around 26. West southwest wind 10 to 17 mph, with gusts as high as 31 mph.
Tuesday
Snow likely, mainly after noon. Mostly cloudy, with a high near 39.
Tuesday Night
Rain and snow likely, becoming all snow after 3am. Mostly cloudy, with a low around 32. Breezy.
Wednesday
Snow likely. Mostly cloudy, with a high near 37. Breezy.
Wednesday Night
Snow likely. Mostly cloudy, with a low around 20. Breezy.
Thursday
A chance of snow. Partly sunny, with a high near 32.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles W St Mary MT
 48.76°N 113.7°W (Elev. 5033 ft)
Last Update:
4:01 am MDT Mar 20, 2026
Forecast Valid:
6am MDT Mar 20, 2026-6pm MDT Mar 26, 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