Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
13°F
-11°C
| Humidity | 84% |
| Wind Speed | W 10 mph |
| Barometer | 30.32 in (1027.8 mb) |
| Dewpoint | 9°F (-13°C) |
| Visibility | 10.00 mi |
| Wind Chill | 0°F (-18°C) |
| Last update | 30 Dec 2:54 am CST |
Extended Forecast for
3 Miles WSW Forsyth IL
Overnight

Low: 13 °F
Partly Cloudy
Tuesday

High: 30 °F
Increasing
CloudsTuesday Night

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
Partly Cloudy
Friday

High: 37 °F
Mostly Cloudy
Friday Night

Low: 22 °F
Mostly Cloudy
Detailed Forecast
Overnight
Partly cloudy, with a low around 13. Wind chill values between 1 and 6. West northwest wind 11 to 13 mph, with gusts as high as 21 mph.
Tuesday
Increasing clouds, with a high near 30. Wind chill values between 1 and 11. West southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
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
Partly cloudy, with a low around 22. South southeast wind 3 to 5 mph.
Friday
Mostly cloudy, with a high near 37.
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
Basemap Options
Click map to change the forecast location
Loading map...
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
3am CST Dec 30, 2025-6pm CST Jan 5, 2026



