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

Severe Thunderstorms and Heavy Rainfall Today from the Central Plains into the Tennessee Valley

Severe thunderstorms capable of damaging winds will be possible from the Ozark Plateau east into portions of the Southeast today. Rounds of heavy thunderstorms ahead of a slow moving front will continue locally heavy rainfall and scattered flash flooding potential from the Ozarks to the Ohio and Tennessee Valleys today. Read More >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

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

NA

59°F

15°C

Humidity 78%
Wind Speed ESE 0 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Last update 12 Jul 01:30 AM MDT
Extended Forecast for

Garrison MT

  • Overnight

    Overnight: Partly cloudy, with a low around 48. Calm wind becoming east southeast around 5 mph.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 93. Light and variable wind becoming west northwest 11 to 16 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 93 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 58. Northwest wind 9 to 14 mph becoming light and variable in the evening. Winds could gust as high as 23 mph.

    Low: 58 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 93. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 93 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of rain after 9pm. Partly cloudy, with a low around 60. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 60 °F

    Slight Chance
    T-storms then
    Slight Chance
    Rain

  • Tuesday

    Tuesday: A slight chance of rain, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 87. Chance of precipitation is 60%.

    High: 87 °F

    Slight Chance
    Rain then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 57.

    Low: 57 °F

    Chance
    T-storms then
    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 48. Calm wind becoming east southeast around 5 mph.
Sunday
Partly sunny, with a high near 93. Light and variable wind becoming west northwest 11 to 16 mph in the afternoon. Winds could gust as high as 23 mph.
Sunday Night
Mostly cloudy, with a low around 58. Northwest wind 9 to 14 mph becoming light and variable in the evening. Winds could gust as high as 23 mph.
Monday
Mostly sunny, with a high near 93. Calm wind becoming northwest around 5 mph in the afternoon.
Monday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of rain after 9pm. Partly cloudy, with a low around 60. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Tuesday
A slight chance of rain, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 87.
Wednesday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 57.
Thursday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 88.
Thursday Night
A slight chance of rain. Partly cloudy, with a low around 53.
Friday
Sunny, with a high near 88.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 56.
Saturday
Sunny, with a high near 91.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Garrison MT
 46.51°N 112.81°W (Elev. 4380 ft)
Last Update:
12:21 am MDT Jul 12, 2026
Forecast Valid:
1am MDT Jul 12, 2026-6pm MDT Jul 18, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation