Early Spring Heat Wave in the Southwest U.S.; Critical Fire Weather in the Central Rockies and Plains

An unusual early Spring heat wave will continue much above-normal temperatures over the Southwest U.S. through early next week. Many locations are likely to set records for the highest-ever March temperature. Periods of critical fire weather will persist from the central Rockies to the central Plains through Saturday as gusty winds and low relative humidity continue. Read More >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

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

NA

27°F

-3°C

Humidity 95%
Wind Speed W 2 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Last update 19 Mar 08:30 AM MDT
Extended Forecast for

12 Miles W Marysville MT

  • Today

    Today: Sunny, with a high near 45. Windy, with a west wind 32 to 34 mph, with gusts as high as 43 mph.

    High: 45 °F

    Sunny and
    Windy

  • Tonight

    Tonight: Mostly clear, with a low around 35. Windy, with a west wind 25 to 34 mph, with gusts as high as 40 mph.

    Low: 35 °F

    Mostly Clear
    and Windy

  • Friday

    Friday: Mostly sunny, with a high near 50. Windy, with a west southwest wind 25 to 31 mph, with gusts as high as 39 mph.

    High: 50 °F

    Mostly Sunny
    and Windy

  • Friday Night

    Friday Night: A 20 percent chance of rain after midnight.  Snow level 9400 feet. Partly cloudy, with a low around 35. Windy, with a west southwest wind 23 to 31 mph, with gusts as high as 37 mph.

    Low: 35 °F

    Partly Cloudy
    and Windy
    then Slight
    Chance Rain
    and Breezy

  • Saturday

    Saturday: Rain and snow likely, becoming all snow after 9am.  Mostly cloudy, with a high near 37. Windy, with a west wind 24 to 30 mph, with gusts as high as 37 mph.  Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Rain/Snow
    Likely and
    Breezy then
    Snow Likely
    and Windy

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before midnight.  Mostly clear, with a low around 23. Windy.

    Low: 23 °F

    Slight Chance
    Snow and
    Windy then
    Mostly Clear
    and Breezy

  • Sunday

    Sunday: Sunny, with a high near 34. Breezy.

    High: 34 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 39.

    High: 39 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny, with a high near 45. Windy, with a west wind 32 to 34 mph, with gusts as high as 43 mph.
Tonight
Mostly clear, with a low around 35. Windy, with a west wind 25 to 34 mph, with gusts as high as 40 mph.
Friday
Mostly sunny, with a high near 50. Windy, with a west southwest wind 25 to 31 mph, with gusts as high as 39 mph.
Friday Night
A 20 percent chance of rain after midnight. Snow level 9400 feet. Partly cloudy, with a low around 35. Windy, with a west southwest wind 23 to 31 mph, with gusts as high as 37 mph.
Saturday
Rain and snow likely, becoming all snow after 9am. Mostly cloudy, with a high near 37. Windy, with a west wind 24 to 30 mph, with gusts as high as 37 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Saturday Night
A 20 percent chance of snow before midnight. Mostly clear, with a low around 23. Windy.
Sunday
Sunny, with a high near 34. Breezy.
Sunday Night
Partly cloudy, with a low around 24.
Monday
Mostly cloudy, with a high near 39.
Monday Night
A slight chance of snow. Mostly cloudy, with a low around 29.
Tuesday
A chance of rain and snow. Mostly cloudy, with a high near 45.
Tuesday Night
A chance of rain and snow. Snow level 9000 feet lowering to 8200 feet after midnight . Mostly cloudy, with a low around 31. Breezy.
Wednesday
Rain and snow likely. Mostly cloudy, with a high near 37. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles W Marysville MT
 46.77°N 112.54°W (Elev. 8199 ft)
2:01 am MDT Mar 19, 2026
8am MDT Mar 19, 2026-6pm MDT Mar 25, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database