National Weather Service

News Headlines

August 11, 2026 Severe Thunderstorms Produce Giant Hail and Extreme Wind

Current conditions at

Custer, Custer County Airport (KCUT)

Lat: 43.73° N Lon: 103.62° W Elev: 5600 ft.

Overcast

58°F

14°C

Humidity	97%
Wind Speed	NW 5 mph
Barometer	30.25 in (1017.6 mb)
Dewpoint	57°F (14°C)
Visibility	10.00 mi
Last update	15 Aug 4:53 am MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Detailed forecast for

Southern Black Hills

Today

Mostly cloudy with showers likely. Isolated thunderstorms this morning, then thunderstorms likely this afternoon. Highs in the lower 70s. North winds around 5 mph, becoming southeast this afternoon. Chance of rain 70 percent.

Tonight

Mostly cloudy with showers likely with a chance of thunderstorms in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the mid 50s. North winds 5 to 10 mph. Chance of rain 60 percent.

Sunday

Partly cloudy in the morning, then mostly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Southeast winds 5 to 10 mph. Gusts up to 20 mph in the afternoon. Chance of rain 40 percent.

Sunday Night

Mostly clear. A chance of showers and thunderstorms in the evening. Lows in the upper 50s. Northeast winds 5 to 10 mph. Gusts up to 20 mph in the evening. Chance of rain 40 percent.

Monday

Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. West winds 5 to 10 mph. Gusts up to 20 mph in the afternoon. Chance of rain 20 percent.

Monday Night

Partly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 50s. Chance of rain 40 percent.

Tuesday

Mostly cloudy in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs around 80. Chance of rain 50 percent.

Tuesday Night

Partly cloudy. A chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the mid 50s. Chance of rain 40 percent.

Wednesday

Partly cloudy with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 40 percent.

Wednesday Night

Mostly clear. A chance of showers and thunderstorms in the evening. Lows in the mid 50s. Chance of rain 30 percent.

Thursday

Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20 percent.

Thursday Night

Mostly clear. Lows in the upper 50s.

Friday

Partly cloudy in the morning, then clearing. Highs in the mid 80s.