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Severe Thunderstorms With Heavy Rain from Great Lakes to Mid-Atlantic; Excessive Heat For Central/Southern U.S. to Mid-Atlantic

Severe thunderstorms are possible today into Sunday across the upper Great Lakes region to the northern Mid-Atlantic. Damaging winds, large hail, and flooding will be the primary threats with these storms. Meanwhile, dangerous heat will continue through Sunday across the central and southern U.S. into the Mid-Atlantic. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Clear

88°F

31°C

Humidity 62%
Wind Speed SE 14 mph
Barometer 29.89 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 22 Jul 11:45 am CDT
Extended Forecast for

West Alton MO

Excessive Heat Warning until July 23, 08:00pm
Click here for hazard details and duration
Excessive Heat Warning
  •  
    Excessive Heat Warning until July 23, 08:00pm

    NOW until
    8:00pm Sun

    Excessive Heat Warning

  • This
    Afternoon

    This Afternoon: Sunny and hot, with a high near 102. Heat index values as high as 113. Southwest wind 11 to 13 mph.

    Hot

    High: 102 °F

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 11pm.  Increasing clouds, with a low around 78. West wind 5 to 10 mph.

    Chance
    T-storms

    Low: 78 °F

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly before 8am.  Partly sunny, with a high near 96. Heat index values as high as 103. Northwest wind around 6 mph.

    Chance
    T-storms

    High: 96 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 71. Northwest wind around 5 mph becoming calm  in the evening.

    Partly Cloudy

    Low: 71 °F

  • Monday

    Monday: Sunny, with a high near 90. North wind 3 to 5 mph.

    Sunny

    High: 90 °F

  • Monday
    Night

    Monday Night: Mostly clear, with a low around 69.

    Mostly Clear

    Low: 69 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 91.

    Mostly Sunny

    High: 91 °F

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 72.

    Mostly Clear

    Low: 72 °F

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 102. Heat index values as high as 113. Southwest wind 11 to 13 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 11pm. Increasing clouds, with a low around 78. West wind 5 to 10 mph.
Sunday
A 30 percent chance of showers and thunderstorms, mainly before 8am. Partly sunny, with a high near 96. Heat index values as high as 103. Northwest wind around 6 mph.
Sunday Night
Partly cloudy, with a low around 71. Northwest wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 90. North wind 3 to 5 mph.
Monday Night
Mostly clear, with a low around 69.
Tuesday
Mostly sunny, with a high near 91.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
Mostly sunny, with a high near 93.
Wednesday Night
Partly cloudy, with a low around 74.
Thursday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 94.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.
Click Map For Forecast
Point Forecast:
West Alton MO
 38.86°N 90.22°W (Elev. 427 ft)
10:42 am CDT Jul 22, 2017
12pm CDT Jul 22, 2017-6pm CDT Jul 28, 2017
 
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