Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. Read More >

Hazardous Weather Conditions

Extreme Heat Warning until August 15, 09:00 PM CDT

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

78°F

26°C

Humidity	85%
Wind Speed	SE 8 mph
Barometer	29.86 in (1009.8 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	13 Aug 4:51 am CDT

More Information:

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

Extended Forecast for

Rock Hill MO

Extreme Heat Warning August 13, 05:10am until August 15, 09:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning August 13, 05:10am until August 15, 09:00pm
NOW until 9:00pm Sat
Extreme Heat Warning
Overnight
Low: 76 °F
Chance
T-storms
Thursday
High: 98 °F
Chance
T-storms
Thursday Night
Low: 78 °F
Slight Chance
T-storms then
Partly Cloudy
Friday
High: 100 °F
Hot
Friday Night
Low: 79 °F
Mostly Clear
Saturday
High: 101 °F
Hot
Saturday Night
Low: 79 °F
Mostly Clear
Sunday
High: 99 °F
Hot

Detailed Forecast

Overnight

A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Calm wind.

Thursday

A chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms after 3pm. Partly sunny and hot, with a high near 98. Heat index values as high as 113. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 30%.

Thursday Night

A 20 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 78. Southeast wind around 6 mph.

Friday

Sunny and hot, with a high near 100. Heat index values as high as 112. Light and variable wind becoming south around 5 mph in the morning.

Friday Night

Mostly clear, with a low around 79. South wind 3 to 5 mph.

Saturday

Sunny and hot, with a high near 101.

Saturday Night

Mostly clear, with a low around 79.

Sunday

Sunny and hot, with a high near 99.