Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across much of northeast Texas into the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Saturday could bring areas of flooding across parts of the central Plains into the upper Midwest/Great Lakes, and Four Corners states. Read More >

Hazardous Weather Conditions

Heat Advisory until September 19, 08:00 PM CDT

Current conditions at

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

Lat: 38.66°NLon: 90.66°WElev: 463ft.

A Few Clouds

86°F

30°C

Humidity	61%
Wind Speed	SW 9 mph
Barometer	30.22 in (1022.6 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Heat Index	91°F (33°C)
Last update	17 Sep 10:54 am CDT

More Information:

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

Extended Forecast for

3 Miles SSW Dardenne Prairie MO

Heat Advisory September 17, 11:46am until September 19, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory September 17, 11:46am until September 19, 08:00pm
NOW until 8:00pm Sat
Heat Advisory
Today
High: 97 °F
Chance
T-storms
Tonight
Low: 73 °F
Slight Chance
T-storms then
Patchy Fog
Friday
High: 95 °F
Patchy Fog
then Sunny
Friday Night
Low: 74 °F
Mostly Clear
Saturday
High: 96 °F
Mostly Sunny
Saturday Night
Low: 72 °F
Partly Cloudy
then Slight
Chance
Showers
Sunday
High: 90 °F
Slight Chance
Showers then
Slight Chance
T-storms
Sunday Night
Low: 68 °F
Mostly Cloudy
then Chance
Showers

Detailed Forecast

Today

A 30 percent chance of showers and thunderstorms, mainly after 5pm. Sunny and hot, with a high near 97. Heat index values as high as 106. West wind around 7 mph.

Tonight

A 20 percent chance of showers and thunderstorms before 8pm. Patchy fog after 4am. Otherwise, mostly clear, with a low around 73. Light and variable wind.

Friday

Patchy fog before 8am. Otherwise, sunny, with a high near 95. Heat index values as high as 103. Calm wind becoming south around 5 mph.

Friday Night

Mostly clear, with a low around 74. Calm wind becoming south around 5 mph after midnight.

Saturday

Mostly sunny, with a high near 96. Southwest wind 5 to 8 mph.

Saturday Night

A 20 percent chance of showers after 1am. Partly cloudy, with a low around 72.

Sunday

A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 90. Chance of precipitation is 20%.

Sunday Night

A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68.