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Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

49°F

9°C

Humidity 90%
Wind Speed E 5 mph
Barometer 30.11 in (1019.4 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 10 Oct 6:54 am CDT
Extended Forecast for

Clinton IL

  • Today

    Today: Partly sunny, with a high near 81. Southeast wind 9 to 11 mph, with gusts as high as 16 mph.

    High: 81 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 57. East southeast wind 5 to 10 mph.

    Low: 57 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 82. Light and variable wind becoming north northwest around 5 mph in the afternoon.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61. Calm wind becoming south southwest 5 to 8 mph in the evening.

    Low: 61 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 88. Southwest wind 8 to 16 mph, with gusts as high as 21 mph.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 68. South southwest wind 11 to 13 mph, with gusts as high as 18 mph.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83. West southwest wind around 14 mph becoming northwest in the afternoon. Winds could gust as high as 18 mph.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers after 1am. Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly before 1pm. Partly sunny, with a high near 75. Chance of precipitation is 60%.

    High: 75 °F

    Showers
    Likely

Detailed Forecast

Today
Partly sunny, with a high near 81. Southeast wind 9 to 11 mph, with gusts as high as 16 mph.
Tonight
Mostly cloudy, with a low around 57. East southeast wind 5 to 10 mph.
Sunday
Sunny, with a high near 82. Light and variable wind becoming north northwest around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 61. Calm wind becoming south southwest 5 to 8 mph in the evening.
Columbus Day
Sunny, with a high near 88. Southwest wind 8 to 16 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 68. South southwest wind 11 to 13 mph, with gusts as high as 18 mph.
Tuesday
Sunny, with a high near 83. West southwest wind around 14 mph becoming northwest in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
A 30 percent chance of showers after 1am. Mostly clear, with a low around 58.
Wednesday
Showers likely, mainly before 1pm. Partly sunny, with a high near 75. Chance of precipitation is 60%.
Wednesday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Thursday
Showers likely. Partly sunny, with a high near 74.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 51.
Friday
Mostly sunny, with a high near 66. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Clinton IL
 40.15°N 88.98°W (Elev. 712 ft)
Last Update:
7:35 am CDT Oct 10, 2026
Forecast Valid:
7am CDT Oct 10, 2026-6pm CDT Oct 16, 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