Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Light Snow Fog/Mist
24°F
-4°C
| Humidity | 96% |
| Wind Speed | Calm |
| Barometer | 30.11 in (1020.4 mb) |
| Dewpoint | 23°F (-5°C) |
| Visibility | 2.00 mi |
| Last update | 1 Dec 6:54 pm CST |
Extended Forecast for
3 Miles WSW Forsyth IL
Winter Weather Advisory until December 2, 06:00am
NOW until 6:00am Tue
Winter Weather Advisory
Tonight
Low: 15 °F
Snow then
Slight Chance
SnowTuesday

High: 23 °F
Mostly Cloudy
Tuesday Night

Low: 16 °F
Mostly Cloudy
Wednesday

High: 33 °F
Mostly Cloudy
Wednesday Night

Low: 3 °F
Decreasing
CloudsThursday

High: 12 °F
Sunny
Thursday Night

Low: -3 °F
Partly Cloudy
Friday

High: 28 °F
Mostly Sunny
Detailed Forecast
Tonight
Snow, mainly before 11pm. Low around 15. Calm wind becoming west northwest 5 to 7 mph after midnight. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 3 inches possible.
Tuesday
Mostly cloudy, with a high near 23. Northwest wind 5 to 7 mph becoming south southwest in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 16. South wind 6 to 10 mph, with gusts as high as 17 mph.
Wednesday
Mostly cloudy, with a high near 33. South wind 9 to 11 mph becoming west in the afternoon. Winds could gust as high as 17 mph.
Wednesday Night
Cloudy, then gradually becoming partly cloudy, with a low around 3. North northwest wind 9 to 13 mph, with gusts as high as 18 mph.
Thursday
Sunny, with a high near 12. North northwest wind 5 to 10 mph becoming light north in the afternoon. Winds could gust as high as 16 mph.
Thursday Night
Partly cloudy, with a low around -3. Calm wind becoming south around 6 mph after midnight.
Friday
Mostly sunny, with a high near 28.
Friday Night
Mostly cloudy, with a low around 18.
Saturday
Mostly cloudy, with a high near 31.
Saturday Night
Mostly cloudy, with a low around 19.
Sunday
Mostly cloudy, with a high near 29.
Sunday Night
Mostly cloudy, with a low around 11.
Monday
Partly sunny, with a high near 29.
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)
6:36 pm CST Dec 1, 2025
7pm CST Dec 1, 2025-6pm CST Dec 8, 2025



