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

58°F

14°C

Humidity 97%
Wind Speed SE 10 mph
Barometer 30.23 in (1023.5 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 1 Nov 7:54 pm CST
Extended Forecast for

Wenonah IL

  • Tonight

    Tonight: A slight chance of drizzle. Patchy fog after midnight. Otherwise, cloudy, with a low around 55. Southeast wind around 9 mph, with gusts as high as 22 mph.

    Low: 55 °F

    Slight Chance
    Drizzle and
    Patchy Fog

  • Monday

    Monday: A slight chance of drizzle before 11am. Patchy fog before 7am. Otherwise, cloudy, with a high near 67. South wind 8 to 14 mph, with gusts as high as 23 mph.

    High: 67 °F

    Slight Chance
    Drizzle and
    Patchy Fog
    then Cloudy

  • Monday Night

    Monday Night: A 40 percent chance of rain, mainly after 5am. Mostly cloudy, with a low around 60. South wind 14 to 18 mph, with gusts as high as 26 mph.

    Low: 60 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday

    Tuesday: Rain, with thunderstorms also possible after 3pm. High near 72. Breezy, with a south wind 15 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

    High: 72 °F

    Rain and
    Breezy

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm before midnight, then rain likely. Low around 54. South wind 8 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.

    Low: 54 °F

    Rain then
    Rain Likely

  • Wednesday

    Wednesday: A 30 percent chance of rain before noon. Partly sunny, with a high near 66.

    High: 66 °F

    Chance Rain
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of drizzle. Patchy fog after midnight. Otherwise, cloudy, with a low around 55. Southeast wind around 9 mph, with gusts as high as 22 mph.
Monday
A slight chance of drizzle before 11am. Patchy fog before 7am. Otherwise, cloudy, with a high near 67. South wind 8 to 14 mph, with gusts as high as 23 mph.
Monday Night
A 40 percent chance of rain, mainly after 5am. Mostly cloudy, with a low around 60. South wind 14 to 18 mph, with gusts as high as 26 mph.
Tuesday
Rain, with thunderstorms also possible after 3pm. High near 72. Breezy, with a south wind 15 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.
Tuesday Night
Rain and possibly a thunderstorm before midnight, then rain likely. Low around 54. South wind 8 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Wednesday
A 30 percent chance of rain before noon. Partly sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Mostly cloudy, with a low around 44.
Friday
Partly sunny, with a high near 61.
Friday Night
Mostly cloudy, with a low around 38.
Saturday
Partly sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 39.
Sunday
A 20 percent chance of rain. Mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Wenonah IL
 39.32°N 89.29°W (Elev. 673 ft)
Last Update:
7:06 pm CST Nov 1, 2026
Forecast Valid:
8pm CST Nov 1, 2026-6pm CST Nov 8, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation