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

Gary Cooper Bridge I-15 MP 242 (MTYEP)

Lat: 47.13948°NLon: 111.85908°WElev: 3427.0ft.

NA

58°F

14°C

Humidity 90%
Wind Speed S 2 MPH
Barometer NA
Dewpoint 55°F (13°C)
Visibility NA
Last update 18 Aug 01:32 AM MDT
Extended Forecast for

11 Miles S Cascade MT

  • Overnight

    Overnight: Mostly cloudy, with a low around 55. Southwest wind around 6 mph.

    Low: 55 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 69. West wind 7 to 9 mph, with gusts as high as 18 mph.  Chance of precipitation is 30%.

    High: 69 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers, mainly before 8pm.  Mostly cloudy, then gradually becoming clear, with a low around 55. West northwest wind 6 to 10 mph becoming southwest after midnight.

    Low: 55 °F

    Chance
    Showers then
    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 73. West southwest wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57. West wind around 8 mph becoming south after midnight.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 74. South southwest wind 5 to 9 mph becoming northwest in the afternoon.

    High: 74 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56. East northeast wind 5 to 8 mph becoming light and variable  after midnight.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 74. Light and variable wind.

    High: 74 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers before midnight.  Mostly cloudy, with a low around 61.

    Low: 61 °F

    Slight Chance
    Showers then
    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 55. Southwest wind around 6 mph.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 69. West wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
Tuesday Night
A 30 percent chance of showers, mainly before 8pm. Mostly cloudy, then gradually becoming clear, with a low around 55. West northwest wind 6 to 10 mph becoming southwest after midnight.
Wednesday
Sunny, with a high near 73. West southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 57. West wind around 8 mph becoming south after midnight.
Thursday
Sunny, with a high near 74. South southwest wind 5 to 9 mph becoming northwest in the afternoon.
Thursday Night
Mostly clear, with a low around 56. East northeast wind 5 to 8 mph becoming light and variable after midnight.
Friday
Mostly sunny, with a high near 74. Light and variable wind.
Friday Night
A slight chance of showers before midnight. Mostly cloudy, with a low around 61.
Saturday
A slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 75.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 57.
Sunday
Sunny, with a high near 71.
Sunday Night
Mostly clear, with a low around 55.
Monday
Sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles S Cascade MT
 47.1°N 111.67°W (Elev. 6362 ft)
12:31 am MDT Aug 18, 2026
1am MDT Aug 18, 2026-6pm MDT Aug 24, 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