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.

Partly Cloudy

99°F

37°C

Humidity 43%
Wind Speed SW 6 mph
Barometer 29.92 in (1011.6 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index109°F (43°C)
Last update 24 Jul 2:51 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

  • This
    Afternoon

    This Afternoon: Mostly sunny and hot, with a high near 98. Heat index values as high as 114. South wind around 6 mph.

    Hot

    High: 98 °F

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 7pm.  Mostly cloudy, with a low around 77. South wind 5 to 7 mph becoming calm  after midnight.

    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 3 to 8 mph.

    Chance
    T-storms

    High: 90 °F

  • Monday
    Night

    Monday Night: Mostly cloudy, with a low around 73. Northeast wind 6 to 9 mph.

    Mostly Cloudy

    Low: 73 °F

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms.  Partly sunny, with a high near 90. Northeast wind around 6 mph.

    Slight Chance
    T-storms

    High: 90 °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

  • Wednesday
    Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 74.

    Chance
    T-storms

    Low: 74 °F

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 98. Heat index values as high as 114. South wind around 6 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 7pm. Mostly cloudy, with a low around 77. South wind 5 to 7 mph becoming calm after midnight.
Monday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 90. Northeast wind 3 to 8 mph.
Monday Night
Mostly cloudy, with a low around 73. Northeast wind 6 to 9 mph.
Tuesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 90. Northeast wind around 6 mph.
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 87.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 70.
Sunday
A 30 percent chance of showers. Mostly sunny, with a high near 87.
Click Map For Forecast
Point Forecast:
Saint Louis MO
 38.62°N 90.23°W (Elev. 489 ft)
1:32 pm CDT Jul 24, 2016
3pm CDT Jul 24, 2016-6pm CDT Jul 31, 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