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

Severe Weather and Heavy Rainfall in the Ohio Valley; Heat Continuing in the South and Southeast

Severe thunderstorms with damaging wind gusts will be possible from the mid-Mississippi Valley into parts of the Ohio Valley and central Appalachians tonight. Heavy rain associated with these storms may lead to considerable flash and urban flooding impacts across portions of the Ohio Valley. Mid-summer heat persists from the Central Plains to the Southeast. Read More >

Hazardous Weather Conditions

Current conditions at

Centralia Municipal Airport (KENL)

Lat: 38.51°NLon: 89.09°WElev: 525ft.

Fair

81°F

27°C

Humidity 81%
Wind Speed Calm
Barometer 29.93 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 11 Aug 8:55 pm CDT
Extended Forecast for

Centralia Municipal Airport IL

Heat Advisory August 11, 09:18pm until August 12, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 11, 09:18pm until August 12, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • Tonight

    Low: 76 °F

    Mostly Clear

  • Wednesday

    Wednesday: Scattered showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 94. Heat index values as high as 105. Light and variable wind. Chance of precipitation is 30%.

    High: 94 °F

    Scattered
    T-storms

  • Wednesday Night

    Wednesday Night: Scattered showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 76. Calm wind. Chance of precipitation is 30%.

    Low: 76 °F

    Scattered
    T-storms

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 94. Heat index values as high as 105. Calm wind.

    High: 94 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 75. Calm wind.

    Low: 75 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 76. South wind 5 to 7 mph becoming calm after midnight.
Wednesday
Scattered showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 94. Heat index values as high as 105. Light and variable wind. Chance of precipitation is 30%.
Wednesday Night
Scattered showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 76. Calm wind. Chance of precipitation is 30%.
Thursday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 94. Heat index values as high as 105. Calm wind.
Thursday Night
Partly cloudy, with a low around 75. Calm wind.
Friday
Mostly sunny, with a high near 93.
Friday Night
Partly cloudy, with a low around 73.
Saturday
Sunny, with a high near 96.
Saturday Night
Mostly clear, with a low around 75.
Sunday
Sunny, with a high near 96.
Sunday Night
Mostly clear, with a low around 74.
Monday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
Mostly sunny, with a high near 89.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Centralia Municipal Airport IL
 38.52°N 89.1°W (Elev. 525 ft)
Last Update:
8:31 pm CDT Aug 11, 2026
Forecast Valid:
9pm CDT Aug 11, 2026-6pm CDT Aug 18, 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