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 Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

92°F

33°C

Humidity	58%
Wind Speed	W 5 mph
Barometer	29.88 in (1011.2 mb)
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	103°F (39°C)
Last update	12 Aug 11:53 am CDT

More Information:

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

Extended Forecast for

Crystal City MO

Extreme Heat Warning August 12, 11:56am until August 13, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning August 12, 11:56am until August 13, 08:00pm
NOW until 8:00pm Thu
Extreme Heat Warning
Today
High: 97 °F
Hot
Tonight
Low: 76 °F
Heavy Rain
Thursday
High: 100 °F
Isolated
T-storms
Thursday Night
Low: 77 °F
Partly Cloudy
Friday
High: 100 °F
Hot
Friday Night
Low: 76 °F
Mostly Clear
Saturday
High: 102 °F
Hot
Saturday Night
Low: 76 °F
Mostly Clear

Detailed Forecast

Today

Sunny and hot, with a high near 97. Heat index values as high as 107. Calm wind becoming west around 6 mph in the afternoon.

Tonight

Isolated showers and thunderstorms before 10pm, then isolated showers and thunderstorms after 4am. Some of the storms could produce heavy rainfall. Partly cloudy, with a low around 76. South wind 3 to 5 mph. Chance of precipitation is 20%.

Thursday

Isolated showers and thunderstorms before 10am, then isolated showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 100. Heat index values as high as 114. Light and variable wind becoming west around 5 mph in the afternoon. Chance of precipitation is 20%.

Thursday Night

Partly cloudy, with a low around 77. South wind 3 to 5 mph.

Friday

Sunny and hot, with a high near 100. Light southwest wind.

Friday Night

Mostly clear, with a low around 76.

Saturday

Sunny and hot, with a high near 102.

Saturday Night

Mostly clear, with a low around 76.

Sunday

Sunny and hot, with a high near 100.