Heavy Rainfall and Severe Thunderstorms in the Midwest and Southwest; Heat Continues in the Southern U.S.

Heavy to excessive rainfall could bring flooding today through Thursday across parts of the central Plains into the Midwest and southern Arizona and New Mexico. Scattered strong to severe thunderstorms may impact parts of eastern Nebraska into western Iowa later today into early evening. Heat Advisories remain in place across much of east Texas into the mid-Mississippi Valley today and Tuesday. Read More >

Hazardous Weather Conditions

Heat Advisory in effect from September 15, 11:00 AM CDT until September 15, 07:00 PM CDT

Current conditions at

St. Louis Lambert International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Mostly Cloudy

81°F

27°C

Humidity	44%
Wind Speed	SE 14 mph
Barometer	30.14 in (1019.7 mb)
Dewpoint	57°F (14°C)
Visibility	10.00 mi
Heat Index	81°F (27°C)
Last update	14 Sep 12:51 pm CDT

More Information:

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

Extended Forecast for

Saint Louis MO

Heat Advisory September 15, 11:00am until September 15, 07:00pm

Click here for hazard details and duration

Heat Advisory

This Afternoon
High: 88 °F
Sunny
Tonight
Low: 74 °F
Mostly Clear
Tuesday
High: 98 °F
Sunny then
Scattered
T-storms
Tuesday Night
Low: 74 °F
Scattered
T-storms
Wednesday
High: 96 °F
Mostly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 76 °F
Mostly Clear
Thursday
High: 96 °F
Mostly Sunny
Thursday Night
Low: 74 °F
Partly Cloudy
Friday
High: 94 °F
Mostly Sunny

Detailed Forecast

This Afternoon

Sunny, with a high near 88. Southeast wind around 10 mph.

Tonight

Mostly clear, with a low around 74. Southeast wind 7 to 10 mph.

Tuesday

Scattered showers and thunderstorms, mainly after 3pm. Mostly sunny and hot, with a high near 98. Heat index values as high as 106. South wind 5 to 8 mph becoming west in the afternoon. Chance of precipitation is 50%.

Tuesday Night

Scattered showers and thunderstorms. Mostly cloudy, with a low around 74. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

Wednesday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96. Calm wind becoming southwest around 6 mph in the afternoon.

Wednesday Night

Mostly clear, with a low around 76.

Thursday

Mostly sunny, with a high near 96.

Thursday Night

Partly cloudy, with a low around 74.

Friday

Mostly sunny, with a high near 94.

Friday Night

Partly cloudy, with a low around 73.

Saturday

Mostly sunny, with a high near 92.