News Headlines
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
43°F
6°C
| Humidity | 82% |
| Wind Speed | Calm |
| Barometer | 30.39 in (1029.3 mb) |
| Dewpoint | 38°F (3°C) |
| Visibility | 10.00 mi |
| Last update | 18 Oct 11:54 pm CDT |
Extended Forecast for
Clinton IL
Overnight
Low: 39 °F
Clear
Monday
High: 72 °F
Sunny
Monday Night
Low: 40 °F
Mostly Clear
Tuesday
High: 74 °F
Sunny
Tuesday Night
Low: 46 °F
Mostly Clear
Wednesday
High: 75 °F
Sunny
Wednesday Night
Low: 47 °F
Clear
Thursday
High: 75 °F
Sunny
Thursday Night
Low: 49 °F
Mostly Clear
Detailed Forecast
Overnight
Clear, with a low around 39. South wind 3 to 5 mph.
Monday
Sunny, with a high near 72. Calm wind becoming south around 5 mph.
Monday Night
Mostly clear, with a low around 40. Light east wind.
Tuesday
Sunny, with a high near 74. East wind 3 to 5 mph.
Tuesday Night
Mostly clear, with a low around 46. East wind around 5 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 75. Calm wind.
Wednesday Night
Clear, with a low around 47. Calm wind.
Thursday
Sunny, with a high near 75.
Thursday Night
Mostly clear, with a low around 49.
Friday
Sunny, with a high near 74.
Friday Night
Mostly clear, with a low around 48.
Saturday
Mostly sunny, with a high near 74.
Saturday Night
Partly cloudy, with a low around 50.
Sunday
Mostly sunny, with a high near 77.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Clinton IL
40.15°N 88.95°W (Elev. 715 ft)
40.15°N 88.95°W (Elev. 715 ft)
12:31 am CDT Oct 19, 2026
12am CDT Oct 19, 2026-6pm CDT Oct 25, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
