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

Hazardous Weather Conditions

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

68°F

20°C

Humidity 76%
Wind Speed SE 6 mph
Barometer 29.88 in (1011.5 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 21 Jun 5:53 am CDT
Extended Forecast for

Centreville IL

Flood Watch June 21, 07:00am until June 22, 07:00am
Click here for hazard details and duration
Flood Watch

  • Today

    Today: Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 87. Southeast wind 7 to 15 mph becoming south in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 70%.

    High: 87 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 11pm. Low around 66. South wind 7 to 10 mph becoming northwest after midnight. Chance of precipitation is 90%.

    Low: 66 °F

    T-storms then
    Chance
    T-storms

  • Monday

    Monday: Mostly cloudy, with a high near 78. North wind around 10 mph.

    High: 78 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. North wind 5 to 8 mph becoming calm in the evening.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. Light northeast wind.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.

    High: 85 °F

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 87. Southeast wind 7 to 15 mph becoming south in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 70%.
Tonight
Showers and thunderstorms, mainly before 11pm. Low around 66. South wind 7 to 10 mph becoming northwest after midnight. Chance of precipitation is 90%.
Monday
Mostly cloudy, with a high near 78. North wind around 10 mph.
Monday Night
Partly cloudy, with a low around 62. North wind 5 to 8 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 83. Light northeast wind.
Tuesday Night
Mostly clear, with a low around 64.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Wednesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 66.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 65. Chance of precipitation is 20%.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Centreville IL
 38.57°N 90.09°W (Elev. 407 ft)
Last Update:
5:31 am CDT Jun 21, 2026
Forecast Valid:
6am CDT Jun 21, 2026-6pm CDT Jun 27, 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