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

Butte, Bert Mooney Airport (KBTM)

Lat: 45.95472°NLon: 112.4975°WElev: 5545.0ft.

Mostly Cloudy

72°F

22°C

Humidity 28%
Wind Speed NW 8 MPH
Barometer 30.18 in (1022.01 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 18 Aug 02:00 PM MDT
Extended Forecast for

12 Miles NNE Dewey MT

  • This Afternoon

    This Afternoon: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 70. West northwest wind 10 to 13 mph, with gusts as high as 22 mph.

    High: 70 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of rain, mainly before 9pm. Partly cloudy, with a low around 50. West southwest wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 50 °F

    Chance Rain
    then Mostly
    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 76. Light west northwest wind increasing to 5 to 9 mph in the afternoon.

    High: 76 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53. West northwest wind 5 to 7 mph becoming southwest after midnight.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 80. Southwest wind 3 to 8 mph.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 74.

    High: 74 °F

    Mostly Cloudy
    then Showers
    Likely

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 70. West northwest wind 10 to 13 mph, with gusts as high as 22 mph.
Tonight
A 30 percent chance of rain, mainly before 9pm. Partly cloudy, with a low around 50. West southwest wind 8 to 11 mph, with gusts as high as 21 mph.
Wednesday
Sunny, with a high near 76. Light west northwest wind increasing to 5 to 9 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 53. West northwest wind 5 to 7 mph becoming southwest after midnight.
Thursday
Sunny, with a high near 80. Southwest wind 3 to 8 mph.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Mostly sunny, with a high near 79.
Friday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 60.
Saturday
Showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 74.
Saturday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 55.
Sunday
Sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 52.
Monday
Sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NNE Dewey MT
 45.94°N 112.79°W (Elev. 6788 ft)
Last Update:
2:00 pm MDT Aug 18, 2026
Forecast Valid:
2pm MDT Aug 18, 2026-6pm MDT Aug 24, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation