Heat Persists in the South Central U.S. and Southwest; Heavy rains in the Desert Southwest and Central Plains

Sweltering heat remains across the South-Central Plains, Lower/Middle Mississippi Valley, and the Southwest this week with limited nighttime relief. Thunderstorms will bring heavy rainfall leading to localized flash flooding in portions of the Desert Southwest and central Plains. Isolated strong to severe thunderstorms are possible across portions of the central Plains into the Northeast. Read More >

Hazardous Weather Conditions

Air Quality Alert

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Partly Cloudy

88°F

31°C

Humidity	40%
Wind Speed	SE 9 mph
Barometer	30.06 in
Dewpoint	61°F (16°C)
Visibility	10.00 mi
Heat Index	88°F (31°C)
Last update	8 Sep 8:51 pm CDT

More Information:

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

Extended Forecast for

2 Miles SSE Saint Louis MO

Tonight
Low: 76 °F
Mostly Clear
Wednesday
High: 97 °F
Slight Chance
Showers then
Chance
T-storms
Wednesday Night
Low: 72 °F
Showers
Thursday
High: 83 °F
T-storms
Thursday Night
Low: 67 °F
Mostly Cloudy
Friday
High: 87 °F
Mostly Sunny
Friday Night
Low: 69 °F
Mostly Clear
Saturday
High: 92 °F
Chance
T-storms
Saturday Night
Low: 71 °F
Chance
T-storms

Detailed Forecast

Tonight

Mostly clear, with a low around 76. South wind around 6 mph.

Wednesday

A slight chance of showers, then a chance of showers and thunderstorms after 3pm. Partly sunny, then gradually becoming sunny and hot, with a high near 97. Heat index values as high as 103. South wind 6 to 9 mph becoming west in the afternoon. Chance of precipitation is 30%.

Wednesday Night

Showers and thunderstorms likely, then showers and possibly a thunderstorm after midnight. Low around 72. Northwest wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 80%.

Thursday

Showers and thunderstorms, mainly before 1pm. High near 83. Light and variable wind becoming northwest around 6 mph in the morning. Chance of precipitation is 80%.

Thursday Night

Mostly cloudy, with a low around 67. Light northeast wind.

Friday

Mostly sunny, with a high near 87.

Friday Night

Mostly clear, with a low around 69.

Saturday

A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92.

Saturday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.

Sunday

A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 90.