Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

79°F

26°C

Humidity 77%
Wind Speed S 5 mph
Barometer 29.94 in (1013.5 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 18 Aug 7:53 pm CDT
Extended Forecast for

2 Miles E 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 80%.

    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.  Partly 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 86.

    High: 86 °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 66.

    Low: 66 °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 80%.
Wednesday Night
A 20 percent chance of showers and thunderstorms, mainly between 1am and 3am. Partly 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 86.
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 66.
Sunday
Mostly sunny, with a high near 83.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 66.
Monday
A 20 percent chance of showers. Mostly sunny, with a high near 86.
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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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Centreville IL
 38.57°N 90.06°W (Elev. 538 ft)
5:06 pm CDT Aug 18, 2026
8pm CDT Aug 18, 2026-6pm CDT Aug 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database