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

Clinton Municipal Airport (KCWI)

Lat: 41.83°NLon: 90.33°WElev: 696ft.

A Few Clouds

69°F

21°C

Humidity 96%
Wind Speed Calm
Barometer 29.93 in (1013.3 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 18 Aug 11:56 pm CDT
Extended Forecast for

Fenton IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 81. Calm wind becoming north around 5 mph in the afternoon.

    High: 81 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 58. North wind around 5 mph becoming calm.

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy through mid morning, then gradual clearing, with a high near 81. Calm wind becoming southeast around 5 mph.

    High: 81 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 64. Calm wind.
Wednesday
Partly sunny, with a high near 81. Calm wind becoming north around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 58. North wind around 5 mph becoming calm.
Thursday
Mostly cloudy through mid morning, then gradual clearing, with a high near 81. Calm wind becoming southeast around 5 mph.
Thursday Night
Mostly clear, with a low around 61.
Friday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81.
Friday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 62.
Saturday
Sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Mostly cloudy, with a low around 59.
Monday
Partly sunny, with a high near 78.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Fenton IL
 41.74°N 90.03°W (Elev. 600 ft)
11:31 pm CDT Aug 18, 2026
12am CDT Aug 19, 2026-6pm CDT Aug 25, 2026
 
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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