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

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

65°F

18°C

Humidity 84%
Wind Speed SE 9 mph
Barometer 30.06 in (1017.5 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 15 Oct 7:54 am CDT
Extended Forecast for

Wenonah IL

  • Today

    Today: Showers and possibly a thunderstorm, mainly before 1pm, then a chance of showers and thunderstorms after 1pm. High near 78. East wind 5 to 10 mph becoming south in the afternoon. Chance of precipitation is 90%.

    High: 78 °F

    Showers

  • Tonight

    Tonight: Showers and thunderstorms likely before midnight, then scattered showers between midnight and 3am. Increasing clouds, with a low around 46. Southwest wind 10 to 17 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%.

    Low: 46 °F

    Showers
    Likely

  • Friday

    Friday: Isolated showers after 3pm. Partly sunny, with a high near 56. Breezy, with a northwest wind 17 to 20 mph. Chance of precipitation is 20%.

    High: 56 °F

    Partly Sunny
    and Breezy
    then Isolated
    Showers

  • Friday Night

    Friday Night: Cloudy during the early evening, then gradual clearing, with a low around 36. North wind 8 to 14 mph, with gusts as high as 21 mph.

    Low: 36 °F

    Gradual
    Clearing

  • Saturday

    Saturday: Sunny, with a high near 59. North wind around 6 mph becoming calm in the afternoon.

    High: 59 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 35.

    Low: 35 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

Detailed Forecast

Today
Showers and possibly a thunderstorm, mainly before 1pm, then a chance of showers and thunderstorms after 1pm. High near 78. East wind 5 to 10 mph becoming south in the afternoon. Chance of precipitation is 90%.
Tonight
Showers and thunderstorms likely before midnight, then scattered showers between midnight and 3am. Increasing clouds, with a low around 46. Southwest wind 10 to 17 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%.
Friday
Isolated showers after 3pm. Partly sunny, with a high near 56. Breezy, with a northwest wind 17 to 20 mph. Chance of precipitation is 20%.
Friday Night
Cloudy during the early evening, then gradual clearing, with a low around 36. North wind 8 to 14 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 59. North wind around 6 mph becoming calm in the afternoon.
Saturday Night
Clear, with a low around 35.
Sunday
Sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 37.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Mostly sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 43.
Wednesday
Sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Wenonah IL
 39.32°N 89.29°W (Elev. 673 ft)
Last Update:
5:11 am CDT Oct 15, 2026
Forecast Valid:
8am CDT Oct 15, 2026-6pm CDT Oct 21, 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