Dangerous heat and humidity from the central U.S. to East Coast this weekend

Hot and very humid conditions will push the heat index to well over 100 degrees across a large portion of the central and eastern U.S. Excessive Heat Warnings and Heat Advisories are in effect for much of the Plains, Miss. Valley, Midwest, Ohio Valley, Mid-Atlantic and southern states. Be very cautious if you must do outdoor activities in these areas during the afternoon and evening this weekend. Read More >

Current conditions at

St. Louis, Lambert-St. Louis International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Fair

87°F

31°C

Humidity 63%
Wind Speed S 8 mph
Barometer 29.94 in (1012.4 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 23 Jul 11:51 pm CDT
Extended Forecast for

Saint Louis MO

Excessive Heat Warning until July 24, 08:00pm
Click here for hazard details and duration
Excessive Heat Warning
  •  
    Excessive Heat Warning until July 24, 08:00pm

    NOW until
    8:00pm Sun

    Excessive Heat Warning

  • Tonight

    Tonight: Clear, with a low around 81. Light south wind.

    Clear

    Low: 81 °F

  • Sunday

    Sunday: Isolated showers and thunderstorms after 4pm.  Sunny and hot, with a high near 100. Heat index values as high as 113. South wind around 6 mph.  Chance of precipitation is 20%.

    Sunny then
    Isolated
    T-storms

    High: 100 °F

  • Sunday
    Night

    Sunday Night: A 40 percent chance of showers and thunderstorms, mainly after 7pm.  Mostly cloudy, with a low around 77. Southeast wind around 6 mph becoming calm.

    Chance
    T-storms

    Low: 77 °F

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 90. Northeast wind 5 to 7 mph.

    Chance
    T-storms

    High: 90 °F

  • Monday
    Night

    Monday Night: Mostly cloudy, with a low around 73. Northeast wind 3 to 7 mph.

    Mostly Cloudy

    Low: 73 °F

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 89.

    Slight Chance
    T-storms

    High: 89 °F

  • Tuesday
    Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 74.

    Chance
    T-storms

    Low: 74 °F

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms.  Partly sunny, with a high near 89.

    Chance
    T-storms

    High: 89 °F

Detailed Forecast

Tonight
Clear, with a low around 81. Light south wind.
Sunday
Isolated showers and thunderstorms after 4pm. Sunny and hot, with a high near 100. Heat index values as high as 113. South wind around 6 mph. Chance of precipitation is 20%.
Sunday Night
A 40 percent chance of showers and thunderstorms, mainly after 7pm. Mostly cloudy, with a low around 77. Southeast wind around 6 mph becoming calm.
Monday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 90. Northeast wind 5 to 7 mph.
Monday Night
Mostly cloudy, with a low around 73. Northeast wind 3 to 7 mph.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Click Map For Forecast
Point Forecast:
Saint Louis MO
 38.62°N 90.23°W (Elev. 489 ft)
11:45 pm CDT Jul 23, 2016
11pm CDT Jul 23, 2016-6pm CDT Jul 30, 2016
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database