Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

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

NA

53°F

12°C

Humidity 71%
Wind Speed ESE 0 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Last update 18 Aug 04:00 AM MDT
Extended Forecast for

Elliston MT

  • Today

    Today: A 40 percent chance of showers and thunderstorms after noon.  Partly sunny, with a high near 75. Light and variable wind becoming west 9 to 14 mph in the morning. Winds could gust as high as 24 mph.

    High: 75 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 49. West northwest wind 5 to 14 mph becoming southeast in the evening. Winds could gust as high as 24 mph.

    Low: 49 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 78. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 51. West northwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 51 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms after noon.  Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 75. Light and variable wind becoming west 9 to 14 mph in the morning. Winds could gust as high as 24 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 49. West northwest wind 5 to 14 mph becoming southeast in the evening. Winds could gust as high as 24 mph.
Wednesday
Sunny, with a high near 78. West wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 51. West northwest wind 5 to 8 mph becoming calm in the evening.
Thursday
Sunny, with a high near 84. Calm wind becoming west 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 52.
Friday
Mostly sunny, with a high near 84.
Friday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 54.
Saturday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 80.
Saturday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 50.
Sunday
Sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 50.
Monday
Sunny, with a high near 79.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Elliston MT
 46.57°N 112.44°W (Elev. 5020 ft)
2:01 am MDT Aug 18, 2026
4am MDT Aug 18, 2026-6pm MDT Aug 24, 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