Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Light Snow Fog/Mist
25°F
-4°C
| Humidity | 92% |
| Wind Speed | SE 3 mph |
| Barometer | 30.14 in (1021.6 mb) |
| Dewpoint | 23°F (-5°C) |
| Visibility | 2.00 mi |
| Last update | 1 Dec 4:54 pm CST |
Extended Forecast for
Decatur IL
Winter Weather Advisory until December 2, 06:00am
NOW until 6:00am Tue

Winter Weather Advisory
This Afternoon

High: 27 °F
Snow
Tonight
Low: 15 °F
Snow then
Chance SnowTuesday

High: 23 °F
Mostly Cloudy
Tuesday Night

Low: 16 °F
Mostly Cloudy
Wednesday

High: 34 °F
Mostly Cloudy
Wednesday Night

Low: 4 °F
Decreasing
CloudsThursday

High: 13 °F
Sunny
Thursday Night

Low: -2 °F
Partly Cloudy
Detailed Forecast
This Afternoon
Snow. High near 27. Light east southeast wind. Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
Snow, mainly before 1am. Low around 15. Calm wind becoming west northwest 5 to 7 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Tuesday
Mostly cloudy, with a high near 23. Northwest wind 5 to 7 mph becoming light and variable in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 16. South wind 5 to 9 mph, with gusts as high as 15 mph.
Wednesday
Mostly cloudy, with a high near 34. South wind 7 to 10 mph becoming west in the afternoon. Winds could gust as high as 16 mph.
Wednesday Night
Cloudy, then gradually becoming partly cloudy, with a low around 4. North northwest wind 7 to 10 mph, with gusts as high as 16 mph.
Thursday
Sunny, with a high near 13. North northwest wind 5 to 10 mph becoming light north northeast in the afternoon. Winds could gust as high as 15 mph.
Thursday Night
Partly cloudy, with a low around -2.
Friday
Mostly sunny, with a high near 29.
Friday Night
Mostly cloudy, with a low around 20.
Saturday
Mostly cloudy, with a high near 31.
Saturday Night
Mostly cloudy, with a low around 20.
Sunday
Mostly cloudy, with a high near 30.
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:
Decatur IL
39.84°N 88.94°W (Elev. 692 ft)
39.84°N 88.94°W (Elev. 692 ft)
4:46 pm CST Dec 1, 2025
5pm CST Dec 1, 2025-6pm CST Dec 8, 2025



