News Headlines
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Mostly Cloudy
30°F
-1°C
| Humidity | 82% |
| Wind Speed | N 17 G 26 mph |
| Barometer | 30.17 in (1022.2 mb) |
| Dewpoint | 25°F (-4°C) |
| Visibility | 10.00 mi |
| Wind Chill | 18°F (-8°C) |
| Last update | 7 Dec 3:54 pm CST |
Extended Forecast for
Decatur Airport IL
Tonight

Low: 14 °F
Mostly Cloudy
Monday

High: 28 °F
Decreasing
CloudsMonday Night

Low: 19 °F
Mostly Cloudy
Tuesday

High: 42 °F
Partly Sunny
Tuesday Night
Low: 35 °F
Cloudy then
Chance Rain
and BreezyWednesday

High: 40 °F
Mostly Cloudy
and BreezyWednesday Night

Low: 21 °F
Mostly Cloudy
Thursday

High: 30 °F
Chance Snow
Thursday Night

Low: 13 °F
Mostly Cloudy
Detailed Forecast
Tonight
Mostly cloudy, with a low around 14. North northeast wind 6 to 13 mph, with gusts as high as 18 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 28. Northeast wind around 6 mph becoming calm in the afternoon.
Monday Night
Mostly cloudy, with a low around 19. South wind 5 to 15 mph, with gusts as high as 23 mph.
Tuesday
Partly sunny, with a high near 42. Southwest wind around 15 mph, with gusts as high as 23 mph.
Tuesday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 35. Breezy, with a south wind 14 to 20 mph becoming west after midnight. Winds could gust as high as 32 mph.
Wednesday
Mostly cloudy, with a high near 40. Breezy, with a west northwest wind 14 to 21 mph, with gusts as high as 36 mph.
Wednesday Night
Mostly cloudy, with a low around 21. West northwest wind 7 to 11 mph, with gusts as high as 16 mph.
Thursday
A 50 percent chance of snow. Mostly cloudy, with a high near 30.
Thursday Night
Mostly cloudy, with a low around 13.
Friday
Partly sunny, with a high near 22.
Friday Night
Mostly cloudy, with a low around 2.
Saturday
Partly sunny, with a high near 13.
Saturday Night
Mostly cloudy, with a low around 2.
Sunday
Mostly sunny, with a high near 18.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Decatur Airport IL
39.84°N 88.88°W (Elev. 650 ft)
39.84°N 88.88°W (Elev. 650 ft)
3:16 pm CST Dec 7, 2025
4pm CST Dec 7, 2025-6pm CST Dec 14, 2025


