Extreme Heat and Excessive Rainfall This Week

A significant heat wave continues for the Rockies, Northern Plains, and Great Lakes into the Mid-Atlantic, peaking in intensity through midweek and lingering across parts of the Northern Plains and Midwest until this weekend. Excessive rainfall my bring life-threatening and locally catastrophic flash and urban flooding across portions of southwestern Texas through early Friday. Read More >

Current conditions at

Chamberlain, Chamberlain Municipal Airport (K9V9)

Lat: 43.77° N Lon: 99.32° W Elev: 1693 ft.

Fair

74°F

23°C

Humidity 74%
Wind Speed S 10 mph
Barometer 30.14 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 15 Jul 12:35 am CDT
Detailed forecast for

Lyman County

Rest Of Tonight
Clear. Lows in the upper 60s. South winds 10 to 15 mph with gusts up to 25 mph.
Wednesday
Sunny, hot with highs in the mid 90s. South winds 15 to 20 mph with gusts up to 30 mph.
Wednesday Night
Clear. Lows in the lower 70s. Southeast winds 15 to 20 mph with gusts up to 30 mph.
Thursday
Mostly sunny. Hot with highs in the upper 90s. South winds 10 to 15 mph with gusts up to 25 mph.
Thursday Night
Mostly clear. Lows in the lower 70s. South winds 10 to 15 mph with gusts up to 25 mph.
Friday Through Saturday Night
Mostly clear. Hot. Highs around 100. Lows in the lower 70s. Heat index values up to 100.
Sunday
Partly sunny. Hot with highs around 100.
Sunday Night
Partly cloudy with a 20 percent chance of thunderstorms. Lows in the lower 70s. Heat index values up to 100 early in the evening.
Monday
Partly sunny. Hot with highs in the lower 90s.
Monday Night
Partly cloudy. A slight chance of thunderstorms after midnight. Lows in the mid 60s. Chance of rain 20 percent.
Tuesday
Partly sunny. Highs in the upper 80s.



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1236 AM CDT Wed Jul 15 2026
 
 

Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database