Severe Weather and Heavy Rainfall in the Ohio Valley; Heat Continuing in the South and Southeast

Severe thunderstorms with damaging wind gusts will be possible from the mid-Mississippi Valley into parts of the Ohio Valley and central Appalachians tonight. Heavy rain associated with these storms may lead to considerable flash and urban flooding impacts across portions of the Ohio Valley. Mid-summer heat persists from the Central Plains to the Southeast. Read More >

Hazardous Weather Conditions

Extreme Heat Warning until August 13, 08:00 PM CDT

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

A Few Clouds

83°F

28°C

Humidity	74%
Wind Speed	SW 8 mph
Barometer	29.87 in (1010.0 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	90°F (32°C)
Last update	12 Aug 1:51 am CDT

More Information:

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

Extended Forecast for

2 Miles W Maryland Heights MO

Extreme Heat Warning August 12, 02:28am until August 13, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning August 12, 02:28am until August 13, 08:00pm
NOW until 8:00pm Thu
Extreme Heat Warning
Overnight
Low: 80 °F
Partly Cloudy
Wednesday
High: 97 °F
Hot
Wednesday Night
Low: 77 °F
Chance
T-storms
Thursday
High: 97 °F
Slight Chance
T-storms then
Mostly Sunny
Thursday Night
Low: 78 °F
Partly Cloudy
Friday
High: 99 °F
Hot
Friday Night
Low: 79 °F
Mostly Clear
Saturday
High: 100 °F
Hot

Detailed Forecast

Overnight

Partly cloudy, with a low around 80. Southwest wind around 6 mph.

Wednesday

Mostly sunny and hot, with a high near 97. Heat index values as high as 110. Southwest wind 6 to 8 mph.

Wednesday Night

A 30 percent chance of showers and thunderstorms, mainly after 4am. Partly cloudy, with a low around 77. South wind around 5 mph.

Thursday

A 20 percent chance of showers and thunderstorms before 8am. Mostly sunny and hot, with a high near 97. Heat index values as high as 106. South wind 5 to 8 mph.

Thursday Night

Partly cloudy, with a low around 78. South wind around 6 mph becoming southwest after midnight.

Friday

Mostly sunny and hot, with a high near 99.

Friday Night

Mostly clear, with a low around 79.

Saturday

Sunny and hot, with a high near 100.

Saturday Night

Mostly clear, with a low around 79.

Sunday

Sunny and hot, with a high near 98.