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

Big Hole Pass CTY-278 MP 32 (MTBHP)

Lat: 45.31545°NLon: 113.30974°WElev: 6722.0ft.

NA

72°F

22°C

Humidity 18%
Wind Speed W 21 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Last update 18 Aug 01:45 PM MDT
Extended Forecast for

12 Miles SSW Polaris MT

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms.  Partly sunny, with a high near 67. West wind around 14 mph, with gusts as high as 25 mph.

    High: 67 °F

    Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before 10pm.  Partly cloudy, with a low around 48. West northwest wind 9 to 14 mph becoming light west. Winds could gust as high as 21 mph.

    Low: 48 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 70. West southwest wind 5 to 13 mph, with gusts as high as 22 mph.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 51. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 51 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 74. Light southwest wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 74 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 56. West wind 5 to 9 mph.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 75. Light and variable wind becoming south southeast 5 to 8 mph in the morning.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers before midnight.  Mostly cloudy, with a low around 57. East wind 7 to 9 mph.

    Low: 57 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 69.

    High: 69 °F

    Mostly Cloudy
    then Showers
    Likely

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 67. West wind around 14 mph, with gusts as high as 25 mph.
Tonight
A 20 percent chance of showers before 10pm. Partly cloudy, with a low around 48. West northwest wind 9 to 14 mph becoming light west. Winds could gust as high as 21 mph.
Wednesday
Sunny, with a high near 70. West southwest wind 5 to 13 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly clear, with a low around 51. West wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 74. Light southwest wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 56. West wind 5 to 9 mph.
Friday
Mostly sunny, with a high near 75. Light and variable wind becoming south southeast 5 to 8 mph in the morning.
Friday Night
A chance of showers before midnight. Mostly cloudy, with a low around 57. East wind 7 to 9 mph.
Saturday
Showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 69.
Saturday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 50.
Sunday
Sunny, with a high near 67.
Sunday Night
Partly cloudy, with a low around 48.
Monday
Sunny, with a high near 68.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles SSW Polaris MT
 45.21°N 113.26°W (Elev. 8186 ft)
12:31 pm MDT Aug 18, 2026
2pm 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