Severe Weather and Heavy Rainfall from the High Plains to the Ohio Valley; Heat Continuing in the Central Plains and Southeast

A stationary front will be the focus for daily showers and thunderstorms capable of widely scattered flash flooding and severe weather from the High Plains to the Ohio Valley. Monsoonal thunderstorms could cause local flash flooding across the Southwest and the Great Basin. Dangerous heat continues across the Central Plains and Southeast. Many areas will see their hottest temperatures of the year. Read More >

Hazardous Weather Conditions

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

Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Fair

85°F

29°C

Humidity	68%
Wind Speed	SW 10 mph
Barometer	29.84 in (1009.5 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	92°F (33°C)
Last update	12 Aug 8:54 am CDT

More Information:

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

Extended Forecast for

Glencoe MO

Extreme Heat Warning August 12, 09:33am until August 13, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning August 12, 09:33am until August 13, 08:00pm
NOW until 8:00pm Thu
Extreme Heat Warning
Today
High: 94 °F
Sunny then
Isolated
T-storms
Tonight
Low: 76 °F
Partly Cloudy
then Heavy
Rain
Thursday
High: 97 °F
Hot
Thursday Night
Low: 77 °F
Decreasing
Clouds
Friday
High: 97 °F
Hot
Friday Night
Low: 77 °F
Mostly Clear
Saturday
High: 98 °F
Hot
Saturday Night
Low: 76 °F
Mostly Clear

Detailed Forecast

Today

Isolated showers and thunderstorms after 4pm. Sunny, with a high near 94. Heat index values as high as 106. Southwest wind 5 to 8 mph. Chance of precipitation is 20%.

Tonight

A 30 percent chance of showers and thunderstorms, mainly after 5am. Some of the storms could produce heavy rainfall. Partly cloudy, with a low around 76. Light and variable wind becoming east around 5 mph in the evening.

Thursday

Mostly sunny and hot, with a high near 97. Heat index values as high as 110. South wind around 5 mph.

Thursday Night

Mostly cloudy, then gradually becoming mostly clear, with a low around 77. Light and variable wind becoming south around 6 mph in the evening.

Friday

Mostly sunny and hot, with a high near 97. Light southwest wind.

Friday Night

Mostly clear, with a low around 77.

Saturday

Sunny and hot, with a high near 98.

Saturday Night

Mostly clear, with a low around 76.