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 Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

A Few Clouds

82°F

28°C

Humidity	77%
Wind Speed	Calm
Barometer	29.90 in (1012.1 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	88°F (31°C)
Last update	14 Aug 2:53 am CDT

More Information:

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

Extended Forecast for

2 Miles NNW Collinsville IL

Extreme Heat Warning August 14, 02:57am until August 15, 09:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning August 14, 02:57am until August 15, 09:00pm
NOW until 9:00pm Sat
Extreme Heat Warning
Overnight
Low: 77 °F
Partly Cloudy
Friday
High: 96 °F
Chance
T-storms then
Sunny
Friday Night
Low: 77 °F
Mostly Clear
Saturday
High: 96 °F
Mostly Sunny
Saturday Night
Low: 77 °F
Partly Cloudy
Sunday
High: 95 °F
Mostly Sunny
Sunday Night
Low: 73 °F
Chance
T-storms then
Chance
Showers
Monday
High: 86 °F
Mostly Sunny

Detailed Forecast

Overnight

Partly cloudy, with a low around 77. South wind around 7 mph.

Friday

A 30 percent chance of showers and thunderstorms, mainly before 9am. Mostly sunny, with a high near 96. Heat index values as high as 110. Calm wind becoming south around 6 mph in the morning.

Friday Night

Mostly clear, with a low around 77. Southeast wind around 6 mph.

Saturday

Mostly sunny, with a high near 96. Heat index values as high as 109. Light and variable wind becoming southwest 5 to 7 mph in the morning.

Saturday Night

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

Sunday

Mostly sunny, with a high near 95.

Sunday Night

A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 73.

Monday

Mostly sunny, with a high near 86.