National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Storms and Flash Flooding in the Midwest: Critical Fire Weather Threats in the West

Strong to severe storms with damaging winds, large hail, and locally heavy rain will be possible from the Central Plains to the Mid-South and the Great Lakes as a cold front moves eastward. An organized area of thunderstorms may produce a greater severe threat, including a derecho with winds up to 100 mph across parts of Iowa, Illinois, and southern Wisconsin. Read More >

Hazardous Weather Conditions

Current conditions at

St. Louis, Spirit Of St. Louis Airport (KSUS)

Lat: 38.66°NLon: 90.66°WElev: 463ft.

Mostly Cloudy

88°F

31°C

Humidity 75%
Wind Speed S 3 mph
Barometer 29.89 in (1011.1 mb)
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index103°F (39°C)
Last update 10 Aug 4:54 pm CDT
Extended Forecast for

Chesterfield MO

Severe T-storm Watch until August 10, 10:00pm
Heat Advisory until August 10, 07:00pm
Click here for hazard details and duration
Severe T-storm Watch
Heat Advisory
  •  
    Severe T-storm Watch until August 10, 10:00pm
    Heat Advisory until August 10, 07:00pm

    NOW: Multiple
    hazards in effect

    Click HERE for Details

  • This
    Afternoon

    This Afternoon: Scattered showers and thunderstorms. Some storms could be severe, with large hail and damaging winds. Mostly sunny, with a high near 96. Heat index values as high as 105. West wind around 7 mph. Chance of precipitation is 30%.

    Severe
    Thunderstorms

    High: 96 °F

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly between 10pm and 3am. Some storms could be severe, with large hail and damaging winds. Mostly cloudy, with a low around 72. Southwest wind around 6 mph. Chance of precipitation is 60%.

    Severe
    Thunderstorms

    Low: 72 °F

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85. West wind around 6 mph.

    Chance
    T-storms

    High: 85 °F

  • Tuesday
    Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Light east wind.

    Slight Chance
    T-storms

    Low: 70 °F

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89. East wind 3 to 6 mph.

    Chance
    T-storms

    High: 89 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 71.

    Partly Cloudy

    Low: 71 °F

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.

    Chance
    T-storms

    High: 90 °F

  • Thursday
    Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71.

    Chance
    T-storms

    Low: 71 °F

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms. Some storms could be severe, with large hail and damaging winds. Mostly sunny, with a high near 96. Heat index values as high as 105. West wind around 7 mph. Chance of precipitation is 30%.
Tonight
Showers and thunderstorms likely, mainly between 10pm and 3am. Some storms could be severe, with large hail and damaging winds. Mostly cloudy, with a low around 72. Southwest wind around 6 mph. Chance of precipitation is 60%.
Tuesday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85. West wind around 6 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Light east wind.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89. East wind 3 to 6 mph.
Wednesday Night
Partly cloudy, with a low around 71.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71.
Friday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 71.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Sunday Night
Partly cloudy, with a low around 67.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Chesterfield MO
 38.65°N 90.57°W (Elev. 512 ft)
Last Update:
3:28 pm CDT Aug 10, 2020
Forecast Valid:
5pm CDT Aug 10, 2020-6pm CDT Aug 17, 2020
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation