Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
16°F
-9°C
| Humidity | 77% |
| Wind Speed | W 13 mph |
| Barometer | 30.33 in (1028.1 mb) |
| Dewpoint | 10°F (-12°C) |
| Visibility | 10.00 mi |
| Wind Chill | 2°F (-17°C) |
| Last update | 30 Dec 8:54 am CST |
Extended Forecast for
3 Miles WSW Forsyth IL
Today

High: 30 °F
Increasing
CloudsTonight

Low: 26 °F
Mostly Cloudy
Wednesday

High: 37 °F
Mostly Cloudy
Wednesday Night

Low: 18 °F
Decreasing
CloudsNew Year's Day

High: 30 °F
Sunny
Thursday Night

Low: 22 °F
Increasing
CloudsFriday

High: 37 °F
Mostly Cloudy
Friday Night

Low: 22 °F
Mostly Cloudy
Saturday

High: 36 °F
Mostly Sunny
Detailed Forecast
Today
Increasing clouds, with a high near 30. Wind chill values between 4 and 14. West southwest wind 11 to 14 mph, with gusts as high as 22 mph.
Tonight
Mostly cloudy, with a low around 26. West northwest wind 11 to 14 mph, with gusts as high as 24 mph.
Wednesday
Mostly cloudy, with a high near 37. West wind 11 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
Cloudy, then gradually becoming partly cloudy, with a low around 18. West wind around 10 mph becoming north after midnight. Winds could gust as high as 16 mph.
New Year's Day
Sunny, with a high near 30. North wind 5 to 9 mph becoming light and variable in the afternoon.
Thursday Night
Increasing clouds, with a low around 22. South southeast wind 3 to 5 mph.
Friday
Mostly cloudy, with a high near 37. Light and variable wind becoming northeast around 6 mph in the morning.
Friday Night
Mostly cloudy, with a low around 22.
Saturday
Mostly sunny, with a high near 36.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 43.
Sunday Night
Partly cloudy, with a low around 27.
Monday
Mostly sunny, with a high near 43.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
3 Miles WSW Forsyth IL
39.89°N 89.02°W (Elev. 656 ft)
39.89°N 89.02°W (Elev. 656 ft)
3:16 am CST Dec 30, 2025
9am CST Dec 30, 2025-6pm CST Jan 5, 2026



