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

Severe Thunderstorms in the Central Plains and Lower Missouri Valley; Heat Continues in the Southeast and Southwest

Severe thunderstorms capable of large hail and damaging wind gusts are forecast to impact the central Plains into the Lower Missouri Valley through this afternoon. Dangerous heat persists across the southern Plains, Southeast U.S. and Puerto Rico this week, and will return to the Southwest today. Read More >

Current conditions at

Gary Cooper Bridge I-15 MP 242 (MTYEP)

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

NA

83°F

28°C

Humidity 20%
Wind Speed S 4 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Heat Index81°F (27°C)
Last update 18 Aug 05:02 PM MDT
Extended Forecast for

16 Miles SSE Cascade MT

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 69. West northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 69 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before 8pm. Mostly clear, with a low around 55. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Chance
    Showers then
    Mostly Clear

  • Wednesday

    Wednesday: Patchy smoke after 4pm. Sunny, with a high near 73. West southwest wind 9 to 13 mph, with gusts as high as 18 mph.

    High: 73 °F

    Sunny then
    Patchy Smoke

  • Wednesday Night

    Wednesday Night: Patchy smoke before 4am, then patchy smoke after 5am. Mostly clear, with a low around 57. West wind around 10 mph becoming south after midnight.

    Low: 57 °F

    Patchy Smoke

  • Thursday

    Thursday: Sunny, with a high near 74. South wind 5 to 10 mph becoming northwest in the afternoon.

    High: 74 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. North wind 5 to 8 mph becoming calm after midnight.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 75. Calm wind becoming north northeast around 6 mph in the afternoon.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers after midnight. Mostly cloudy, with a low around 62. Northeast wind 7 to 10 mph becoming south after midnight.

    Low: 62 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms after noon. Partly sunny, with a high near 75.

    High: 75 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 69. West northwest wind around 10 mph, with gusts as high as 20 mph.
Tonight
A 30 percent chance of showers, mainly before 8pm. Mostly clear, with a low around 55. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.
Wednesday
Patchy smoke after 4pm. Sunny, with a high near 73. West southwest wind 9 to 13 mph, with gusts as high as 18 mph.
Wednesday Night
Patchy smoke before 4am, then patchy smoke after 5am. Mostly clear, with a low around 57. West wind around 10 mph becoming south after midnight.
Thursday
Sunny, with a high near 74. South wind 5 to 10 mph becoming northwest in the afternoon.
Thursday Night
Mostly clear, with a low around 57. North wind 5 to 8 mph becoming calm after midnight.
Friday
Mostly sunny, with a high near 75. Calm wind becoming north northeast around 6 mph in the afternoon.
Friday Night
A slight chance of showers after midnight. Mostly cloudy, with a low around 62. Northeast wind 7 to 10 mph becoming south after midnight.
Saturday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 75.
Saturday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 58.
Sunday
Sunny, with a high near 70.
Sunday Night
Mostly clear, with a low around 55.
Monday
Sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
16 Miles SSE Cascade MT
 47.04°N 111.6°W (Elev. 6322 ft)
Last Update:
12:31 pm MDT Aug 18, 2026
Forecast Valid:
5pm MDT Aug 18, 2026-6pm MDT Aug 25, 2026
 
Forecast Discussion
 
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Additional Resources

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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