Heavy Rainfall and Severe Thunderstorms in the Midwest and Ohio Valley Tuesday

Multiple rounds of severe thunderstorms appear likely Tuesday across the Midwest and Ohio Valley, with severe wind gusts in excess of 75 mph as the primary threat. Heavy to excessive rainfall may lead to considerable flash and urban flooding impacts Tuesday across portions of the Ohio Valley. A Moderate Risk (level 3 of 4) of excessive rainfall has been issued. Read More >

Current conditions at

Yankton, Chan Gurney Municipal Airport (KYKN)

Lat: 42.92° N Lon: 97.38° W Elev: 1306 ft.

A Few Clouds

75°F

24°C

Humidity	100%
Wind Speed	E 5 mph
Barometer	29.88 in (1011.9 mb)
Dewpoint	75°F (24°C)
Visibility	9.00 mi
Last update	11 Aug 1:56 am CDT

More Information:

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

Detailed forecast for

Knox County

Rest Of Tonight

Mostly cloudy. Near steady temperature around 70. East winds 5 to 10 mph.

Tuesday

Mostly sunny. Humid with highs in the upper 80s. East winds 5 to 10 mph.

Tuesday Night

Mostly clear in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Humid with lows in the upper 60s. East winds 5 to 10 mph. Chance of rain 20 percent.

Wednesday

Partly sunny. Humid with highs in the upper 80s. Northeast winds 5 to 10 mph.

Wednesday Night

Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers after midnight. Humid with lows in the upper 60s. East winds 5 to 10 mph. Chance of rain 80 percent.

Thursday

Mostly cloudy with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Not as warm with highs in the mid 70s. Chance of rain 50 percent.

Thursday Night

Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. Lows in the lower 60s. Chance of rain 70 percent.

Friday

Showers likely with a chance of thunderstorms in the morning, then a slight chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 70 percent.

Friday Night

Showers likely. A chance of thunderstorms, mainly in the evening. Lows in the mid 60s. Chance of rain 60 percent.

Saturday

Mostly cloudy. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 50 percent.

Saturday Night

Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Lows in the lower 60s. Chance of rain 50 percent.

Sunday

Mostly cloudy with a slight chance of showers in the morning, then mostly sunny in the afternoon. Highs in the mid 70s. Chance of rain 20 percent.

Sunday Night

Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers with a slight chance of thunderstorms. Lows in the lower 60s. Chance of rain 40 percent.

Monday

Mostly cloudy in the morning, then becoming mostly sunny. Highs in the upper 70s.