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Severe Thunderstorms With Heavy Rain Possible from the Upper Midwest to the Mid-Atlantic; Excessive Heat For Central U.S.

Storms will move from the Upper Great Lakes to the Ohio Valley/Lower Great Lakes into the northern Mid-Atlantic through the day. Damaging winds, large hail, and flooding will be the primary threats with these storms. Excessive heat warnings and heat advisories are in place for states in the Central Plains, the Southeast, and the Mid-Atlantic. Localized flash flooding may occur in the Southwest. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Partly Cloudy

84°F

29°C

Humidity 74%
Wind Speed SW 6 mph
Barometer 29.89 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 22 Jul 7:48 am CDT
Extended Forecast for

6 Miles ESE Chesterfield IL

Excessive Heat Warning until July 22, 08:00pm
Click here for hazard details and duration
Excessive Heat Warning
  •  
    Excessive Heat Warning until July 22, 08:00pm

    NOW until
    8:00pm Sat

    Excessive Heat Warning

  • Today

    Today: Isolated showers and thunderstorms before 11am, then a slight chance of showers and thunderstorms after 5pm.  Sunny and hot, with a high near 100. Heat index values as high as 111. Southwest wind 8 to 15 mph.  Chance of precipitation is 20%.

    Isolated
    T-storms then
    Sunny

    High: 100 °F

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 7pm.  Mostly cloudy, with a low around 76. West wind 3 to 8 mph.

    Chance
    T-storms

    Low: 76 °F

  • Sunday

    Sunday: Partly sunny, with a high near 93. West wind 3 to 7 mph.

    Partly Sunny

    High: 93 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 68. Northwest wind around 5 mph becoming calm  in the evening.

    Partly Cloudy

    Low: 68 °F

  • Monday

    Monday: Sunny, with a high near 88. North wind 3 to 6 mph.

    Sunny

    High: 88 °F

  • Monday
    Night

    Monday Night: Mostly clear, with a low around 65.

    Mostly Clear

    Low: 65 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 89.

    Mostly Sunny

    High: 89 °F

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 68.

    Mostly Clear

    Low: 68 °F

Detailed Forecast

Today
Isolated showers and thunderstorms before 11am, then a slight chance of showers and thunderstorms after 5pm. Sunny and hot, with a high near 100. Heat index values as high as 111. Southwest wind 8 to 15 mph. Chance of precipitation is 20%.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 7pm. Mostly cloudy, with a low around 76. West wind 3 to 8 mph.
Sunday
Partly sunny, with a high near 93. West wind 3 to 7 mph.
Sunday Night
Partly cloudy, with a low around 68. Northwest wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 88. North wind 3 to 6 mph.
Monday Night
Mostly clear, with a low around 65.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
Mostly sunny, with a high near 92.
Wednesday Night
Partly cloudy, with a low around 72.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 92.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Click Map For Forecast
Point Forecast:
6 Miles ESE Chesterfield IL
 39.21°N 89.98°W (Elev. 568 ft)
7:58 am CDT Jul 22, 2017
8am CDT Jul 22, 2017-6pm CDT Jul 28, 2017
 
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