Extreme Heat Across the Southern U.S.; Flash Flooding Threats in the Mid-Atlantic, Northeast, and Four Corners Region

Dangerous and extreme heat will remain across portions of the southern U.S. this week. Heavy rainfall may bring significant flash flooding across portions of the Mid-Atlantic and Northeast through the night, and additional flash flooding concerns across New England on Wednesday. Monsoonal thunderstorms will bring a flash flood risk to the Four Corners region, especially in burn scar areas Read More >

Current conditions at

Yankton, Chan Gurney Municipal Airport (KYKN)

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

Fair

76°F

24°C

Humidity	100%
Wind Speed	E 5 mph
Barometer	29.93 in (1013.6 mb)
Dewpoint	76°F (24°C)
Visibility	9.00 mi
Heat Index	75°F (24°C)
Last update	28 Jul 11:56 pm CDT

More Information:

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

Detailed forecast for

Knox County

Rest Of Tonight

Mostly clear late this evening, then becoming partly cloudy. Lows in the upper 60s. Southeast winds 5 to 10 mph.

Wednesday

Sunny with highs in the mid 90s. South winds 10 to 15 mph. Heat index values up to 105.

Wednesday Night

Partly cloudy. A chance of showers and thunderstorms after midnight. Humid with lows around 70. South winds 10 to 15 mph. Chance of rain 40 percent.

Thursday

Mostly cloudy with a chance of thunderstorms. A chance of showers in the morning, then showers in the afternoon. Humid with highs in the upper 80s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 90 percent. Heat index values up to 103 in the afternoon.

Thursday Night

Showers with a chance of thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Locally heavy rainfall possible in the evening. Humid with lows in the mid 60s. South winds 10 to 15 mph, becoming west after midnight. Chance of rain near 100 percent.

Friday

Partly sunny in the morning, then clearing. Breezy with highs in the lower 80s.

Friday Night

Mostly clear. Lows in the lower 60s.

Saturday

Sunny. Highs in the mid 80s.

Saturday Night

Clear. Lows in the mid 60s.

Sunday

Sunny. Highs in the upper 80s.

Sunday Night

Mostly clear. Lows in the upper 60s.

Monday

Mostly sunny. Highs around 90.

Monday Night

Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the upper 60s. Chance of rain 20 percent.

Tuesday

Mostly cloudy in the morning, then becoming mostly sunny. Highs in the mid 80s.