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 >

Current conditions at

MANY GLACIER (MANM8)

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

NA

31°F

-1°C

Humidity 97%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 30°F (-1°C)
Visibility NA
Last update 21 Mar 10:00 AM MDT
Extended Forecast for

12 Miles W St Mary MT

  • Today

    Today: Snow likely, possibly mixed with rain before noon, then a chance of snow. Mostly cloudy, with a high near 36. West southwest wind 11 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than one inch possible.

    High: 36 °F

    Rain/Snow
    Likely

  • Tonight

    Tonight: A 20 percent chance of snow between 9pm and 11pm. Partly cloudy, with a low around 25. Breezy, with a west southwest wind 15 to 22 mph, with gusts as high as 31 mph.

    Low: 25 °F

    Slight Chance
    Snow then
    Partly Cloudy
    and Breezy

  • Sunday

    Sunday: Sunny, with a high near 37. Windy, with a west southwest wind 23 to 31 mph, with gusts as high as 48 mph.

    High: 37 °F

    Sunny and
    Windy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 24. Windy, with a west southwest wind 26 to 31 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 44 mph.

    Low: 24 °F

    Partly Cloudy
    and Windy
    then Partly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 40. West southwest wind 14 to 20 mph, with gusts as high as 32 mph.

    High: 40 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 25. West southwest wind 10 to 17 mph, with gusts as high as 31 mph.

    Low: 25 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: Snow, mainly after noon. High near 36. West southwest wind 10 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    High: 36 °F

    Chance Snow
    then Snow

  • Tuesday Night

    Tuesday Night: Snow, mainly before midnight. Mostly cloudy, with a low around 28. Breezy, with a southwest wind 18 to 26 mph, with gusts as high as 44 mph.

    Low: 28 °F

    Snow and
    Breezy

  • Wednesday

    Wednesday: Snow likely, mainly after noon. Mostly cloudy, with a high near 35. Breezy.

    High: 35 °F

    Snow Likely
    and Breezy

Detailed Forecast

Today
Snow likely, possibly mixed with rain before noon, then a chance of snow. Mostly cloudy, with a high near 36. West southwest wind 11 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than one inch possible.
Tonight
A 20 percent chance of snow between 9pm and 11pm. Partly cloudy, with a low around 25. Breezy, with a west southwest wind 15 to 22 mph, with gusts as high as 31 mph.
Sunday
Sunny, with a high near 37. Windy, with a west southwest wind 23 to 31 mph, with gusts as high as 48 mph.
Sunday Night
Partly cloudy, with a low around 24. Windy, with a west southwest wind 26 to 31 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 44 mph.
Monday
Mostly sunny, with a high near 40. West southwest wind 14 to 20 mph, with gusts as high as 32 mph.
Monday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 25. West southwest wind 10 to 17 mph, with gusts as high as 31 mph.
Tuesday
Snow, mainly after noon. High near 36. West southwest wind 10 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Tuesday Night
Snow, mainly before midnight. Mostly cloudy, with a low around 28. Breezy, with a southwest wind 18 to 26 mph, with gusts as high as 44 mph.
Wednesday
Snow likely, mainly after noon. Mostly cloudy, with a high near 35. Breezy.
Wednesday Night
Snow likely. Mostly cloudy, with a low around 19. Breezy.
Thursday
A chance of snow. Partly sunny, with a high near 31. Breezy.
Thursday Night
A chance of snow. Partly cloudy, with a low around 18.
Friday
A slight chance of snow. Sunny, with a high near 35.
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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:
8:22 am MDT Mar 21, 2026
Forecast Valid:
11am MDT Mar 21, 2026-6pm MDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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