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

Garrison I-90 MP 174.4 (MTGAR)

Lat: 46.52361°NLon: 112.80843°WElev: 4327.0ft.

NA

21°F

-6°C

Humidity 98%
Wind Speed SE 0 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Last update 22 Mar 07:00 AM MDT
Extended Forecast for

12 Miles W Marysville MT

  • Today

    Today: Sunny, with a high near 32. Windy, with a west wind 26 to 33 mph, with gusts as high as 38 mph.

    High: 32 °F

    Sunny and
    Windy

  • Tonight

    Tonight: Increasing clouds, with a low around 26. Breezy, with a west southwest wind 21 to 26 mph decreasing to 14 to 19 mph after midnight. Winds could gust as high as 31 mph.

    Low: 26 °F

    Mostly Clear
    and Breezy
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 42. Southwest wind 14 to 18 mph, with gusts as high as 25 mph.

    High: 42 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30. West southwest wind 14 to 21 mph, with gusts as high as 24 mph.

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Snow likely, mainly after noon.  Mostly cloudy, with a high near 41. West southwest wind 15 to 20 mph, with gusts as high as 26 mph.  Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Chance Snow
    then Snow
    Likely

  • Tuesday Night

    Tuesday Night: Rain and snow likely before midnight, then a chance of snow.  Snow level 8300 feet. Mostly cloudy, with a low around 35. Breezy.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 35 °F

    Breezy.
    Rain/Snow
    Likely then
    Chance Snow

  • Wednesday

    Wednesday: A 50 percent chance of snow.  Partly sunny, with a high near 38. Windy.  New snow accumulation of less than a half inch possible.

    High: 38 °F

    Chance Snow
    and Windy

  • Wednesday Night

    Wednesday Night: A chance of snow.  Mostly cloudy, with a low around 22. Breezy.

    Low: 22 °F

    Chance Snow
    and Breezy

  • Thursday

    Thursday: A chance of snow, mainly before noon.  Mostly sunny, with a high near 28. Breezy.

    High: 28 °F

    Chance Snow
    and Breezy

Detailed Forecast

Today
Sunny, with a high near 32. Windy, with a west wind 26 to 33 mph, with gusts as high as 38 mph.
Tonight
Increasing clouds, with a low around 26. Breezy, with a west southwest wind 21 to 26 mph decreasing to 14 to 19 mph after midnight. Winds could gust as high as 31 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 42. Southwest wind 14 to 18 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 30. West southwest wind 14 to 21 mph, with gusts as high as 24 mph.
Tuesday
Snow likely, mainly after noon. Mostly cloudy, with a high near 41. West southwest wind 15 to 20 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Tuesday Night
Rain and snow likely before midnight, then a chance of snow. Snow level 8300 feet. Mostly cloudy, with a low around 35. Breezy. Chance of precipitation is 70%. Little or no snow accumulation expected.
Wednesday
A 50 percent chance of snow. Partly sunny, with a high near 38. Windy. New snow accumulation of less than a half inch possible.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 22. Breezy.
Thursday
A chance of snow, mainly before noon. Mostly sunny, with a high near 28. Breezy.
Thursday Night
Mostly clear, with a low around 16. Breezy.
Friday
Sunny, with a high near 35.
Friday Night
Mostly clear, with a low around 21.
Saturday
Mostly sunny, with a high near 42.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles W Marysville MT
 46.77°N 112.54°W (Elev. 8199 ft)
2:01 am MDT Mar 22, 2026
7am MDT Mar 22, 2026-6pm MDT Mar 28, 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