Severe Thunderstorms in the Northern Plains and Upper Midwest; Critical Fire Weather in the West; Dangerous Heat in the Central and Eastern U.S.

Severe thunderstorms are likely today across the northern Plains and into the upper Mississippi Valley. Gusty winds and dry conditions will result in widespread critical fire weather through Saturday across parts of the Four Corners region and the Great Basin. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Read More >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

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

NA

48°F

9°C

Humidity 100%
Wind Speed NW 3 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Last update 20 Jun 11:30 PM MDT
Extended Forecast for

6 Miles WNW Garrison MT

Winter Weather Advisory June 21, 02:00am until June 22, 12:00pm
Click here for hazard details and duration
Winter Weather Advisory
  • Tonight

    Tonight: Showers and possibly a thunderstorm before 3am, then rain after 3am.  Low around 35. West northwest wind 6 to 8 mph, with gusts as high as 20 mph.  Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 35 °F

    Showers

  • Saturday

    Saturday: A chance of rain before noon, then a chance of showers and thunderstorms after noon.  Mostly cloudy, with a high near 59. West wind 8 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 50%.

    High: 59 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Rain, mainly after midnight.  Low around 34. West northwest wind 9 to 14 mph becoming light  after midnight. Winds could gust as high as 23 mph.  Chance of precipitation is 80%.

    Low: 34 °F

    Chance Rain
    then Rain

  • Sunday

    Sunday: Rain before noon, then showers and possibly a thunderstorm after noon.  High near 50. Northwest wind 3 to 6 mph.  Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 50 °F

    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of rain before midnight.  Mostly cloudy, with a low around 29. West northwest wind around 6 mph becoming calm  in the evening.

    Low: 29 °F

    Chance Rain
    then Partly
    Cloudy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after noon.  Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 65.

    High: 65 °F

    Patchy Fog
    then Chance
    Showers

  • Monday Night

    Monday Night: Patchy fog after 5am.  Otherwise, mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 7am.  Otherwise, sunny, with a high near 72.

    High: 72 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers and possibly a thunderstorm before 3am, then rain after 3am. Low around 35. West northwest wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of rain before noon, then a chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 59. West wind 8 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Saturday Night
Rain, mainly after midnight. Low around 34. West northwest wind 9 to 14 mph becoming light after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 80%.
Sunday
Rain before noon, then showers and possibly a thunderstorm after noon. High near 50. Northwest wind 3 to 6 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 29. West northwest wind around 6 mph becoming calm in the evening.
Monday
A 30 percent chance of showers and thunderstorms after noon. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 65.
Monday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 35.
Tuesday
Patchy fog before 7am. Otherwise, sunny, with a high near 72.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Mostly sunny, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 78.
Thursday Night
Partly cloudy, with a low around 45.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 77.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles WNW Garrison MT
 46.55°N 112.94°W (Elev. 4448 ft)
2:30 pm MDT Jun 20, 2025
11pm MDT Jun 20, 2025-6pm MDT Jun 27, 2025
 
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