Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
51°F
11°C
| Humidity | 52% |
| Wind Speed | NW 15 mph |
| Barometer | 30.26 in (1024.9 mb) |
| Dewpoint | 34°F (1°C) |
| Visibility | 10.00 mi |
| Wind Chill | 46°F (8°C) |
| Last update | 5 Apr 12:54 pm CDT |
Extended Forecast for
Decatur IL
This Afternoon

High: 54 °F
Sunny
Tonight

Low: 39 °F
Mostly Clear
Monday

High: 55 °F
Mostly Sunny
Monday Night

Low: 31 °F
Mostly Cloudy
Tuesday

High: 48 °F
Partly Sunny
Tuesday Night

Low: 38 °F
Mostly Cloudy
Wednesday

High: 69 °F
Partly Sunny
Wednesday Night

Low: 52 °F
Partly Cloudy
Thursday
High: 73 °F
Partly Sunny
then Chance
Showers
Detailed Forecast
This Afternoon
Sunny, with a high near 54. West northwest wind around 15 mph, with gusts as high as 24 mph.
Tonight
Mostly clear, with a low around 39. West wind 6 to 9 mph, with gusts as high as 16 mph.
Monday
Mostly sunny, with a high near 55. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Monday Night
Mostly cloudy, with a low around 31. Northwest wind around 11 mph becoming north northeast after midnight. Winds could gust as high as 18 mph.
Tuesday
Partly sunny, with a high near 48. East southeast wind around 9 mph, with gusts as high as 15 mph.
Tuesday Night
Mostly cloudy, with a low around 38. East southeast wind 8 to 10 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a high near 69. South wind 11 to 17 mph, with gusts as high as 28 mph.
Wednesday Night
Partly cloudy, with a low around 52.
Thursday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 73.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 53.
Friday
A chance of showers. Mostly cloudy, with a high near 71.
Friday Night
A chance of showers. Mostly cloudy, with a low around 52.
Saturday
A chance of showers. Mostly cloudy, with a high near 71.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Decatur IL
39.84°N 88.94°W (Elev. 692 ft)
39.84°N 88.94°W (Elev. 692 ft)
1:06 pm CDT Apr 5, 2026
1pm CDT Apr 5, 2026-6pm CDT Apr 11, 2026


