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

Severe Thunderstorms in the Central Plains and Lower Missouri Valley; Heat Continues in the Southeast and Southwest

Severe thunderstorms capable of large hail and damaging wind gusts are forecast to impact the central Plains into the Lower Missouri Valley through this afternoon. Dangerous heat persists across the southern Plains, Southeast U.S. and Puerto Rico this week, and will return to the Southwest today. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

86°F

30°C

Humidity 59%
Wind Speed SE 5 mph
Barometer 29.98 in (1014.7 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 18 Aug 5:53 pm CDT
Extended Forecast for

3 Miles S Centreville IL

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after 5am. Increasing clouds, with a low around 71. Light southeast wind. Chance of precipitation is 60%.

    Low: 71 °F

    Partly Cloudy
    then T-storms
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms, mainly before 10am. High near 80. West wind 5 to 7 mph becoming east in the afternoon. Chance of precipitation is 90%.

    High: 80 °F

    T-storms then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms, mainly between 1am and 3am. Mostly cloudy, with a low around 68. North wind around 6 mph.

    Low: 68 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Partly sunny, with a high near 84. Northeast wind 3 to 7 mph.

    High: 84 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. Light northeast wind.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 68. Chance of precipitation is 20%.

    Low: 68 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 87.

    High: 87 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly after 5am. Increasing clouds, with a low around 71. Light southeast wind. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms, mainly before 10am. High near 80. West wind 5 to 7 mph becoming east in the afternoon. Chance of precipitation is 90%.
Wednesday Night
A 20 percent chance of showers and thunderstorms, mainly between 1am and 3am. Mostly cloudy, with a low around 68. North wind around 6 mph.
Thursday
Partly sunny, with a high near 84. Northeast wind 3 to 7 mph.
Thursday Night
Mostly clear, with a low around 66. Light northeast wind.
Friday
Sunny, with a high near 87.
Friday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 68. Chance of precipitation is 20%.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 87.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Mostly sunny, with a high near 84.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 65.
Monday
A 20 percent chance of showers. Mostly sunny, with a high near 87.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Tuesday
Mostly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Centreville IL
 38.53°N 90.09°W (Elev. 482 ft)
Last Update:
5:06 pm CDT Aug 18, 2026
Forecast Valid:
6pm CDT Aug 18, 2026-6pm CDT Aug 25, 2026
 
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