Flooding Threat Along the Gulf Coast, Southern Rockies and High Plains; Cooler Weather in the Central and Eastern U.S.

Strong thunderstorms may bring excessive rainfall and flooding over parts of the northern Gulf Coast today and over parts of the southern Rockies into the High Plains today through the weekend. A refreshingly cool and dry air mass will continue to produce below average temperatures across the central and eastern U.S. through the weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Yankton, Chan Gurney Municipal Airport (KYKN)

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

NA

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint NA
Visibility NA
Last update *** Not a current observation ***
Detailed forecast for

Knox County

Today
A chance of thunderstorms. Showers likely. Highs around 70. Southeast winds 5 to 10 mph. Chance of rain 70 percent.
Tonight
Showers likely with a slight chance of thunderstorms. Lows in the lower 60s. East winds 5 to 10 mph. Chance of rain 70 percent.
Sunday
Showers likely with a slight chance of thunderstorms. Highs in the upper 60s. East winds 10 to 15 mph. Chance of rain 70 percent.
Sunday Night
A slight chance of thunderstorms in the evening. Showers likely. Lows in the upper 50s. East winds 5 to 10 mph. Chance of rain 70 percent.
Labor Day
Mostly cloudy in the morning, then becoming partly sunny. A chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 70s. East winds 5 to 10 mph. Chance of rain 50 percent.
Monday Night
Mostly 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 50 percent.
Tuesday
Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 20 percent.
Tuesday Night
Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Lows in the lower 50s. Chance of rain 40 percent.
Wednesday
Partly sunny. A slight chance of showers and thunderstorms in the morning. Not as warm with highs in the mid 60s. Chance of rain 20 percent.
Wednesday Night
Partly cloudy. Lows in the mid 40s.
Thursday
Mostly sunny. Highs in the upper 60s.
Thursday Night
Mostly clear. Lows around 50.
Friday
Sunny. Highs in the lower 70s.



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828 AM CDT Sat Aug 30 2025
 
 

Additional Resources

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Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database