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, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

A Few Clouds

95°F

35°C

Humidity 58%
Wind Speed SW 8 mph
Barometer 29.93 in (1012.3 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index111°F (44°C)
Last update 24 Jul 12:54 pm CDT
Extended Forecast for

Saint Peters 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 99. Heat index values as high as 111. South wind 3 to 6 mph.

    Hot

    High: 99 °F

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly after 7pm.  Mostly cloudy, with a low around 76. South wind 5 to 7 mph becoming calm  after midnight.

    Chance
    T-storms

    Low: 76 °F

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 90. North wind 7 to 9 mph.

    Chance
    T-storms

    High: 90 °F

  • Monday
    Night

    Monday Night: Mostly cloudy, with a low around 72. Northeast wind 5 to 8 mph.

    Mostly Cloudy

    Low: 72 °F

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms.  Partly sunny, with a high near 90. Northeast wind 5 to 7 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 73.

    Chance
    T-storms

    Low: 73 °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 72.

    Chance
    T-storms

    Low: 72 °F

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 99. Heat index values as high as 111. South wind 3 to 6 mph.
Tonight
A 50 percent chance of showers and thunderstorms, mainly after 7pm. Mostly cloudy, with a low around 76. 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. North wind 7 to 9 mph.
Monday Night
Mostly cloudy, with a low around 72. Northeast wind 5 to 8 mph.
Tuesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 90. Northeast wind 5 to 7 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.
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 72.
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 72.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Click Map For Forecast
Point Forecast:
Saint Peters MO
 38.78°N 90.59°W (Elev. 492 ft)
10:44 am CDT Jul 24, 2016
1pm CDT Jul 24, 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