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Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fog/Mist
35°F
2°C
| Humidity | 93% |
| Wind Speed | S 15 mph |
| Barometer | 29.93 in (1013.9 mb) |
| Dewpoint | 33°F (1°C) |
| Visibility | 5.00 mi |
| Wind Chill | 25°F (-4°C) |
| Last update | 7 Dec 3:54 am CST |
Extended Forecast for
Decatur Airport IL
Winter Weather Advisory until December 7, 06:00am
NOW until 6:00am Sun
Winter Weather Advisory
Overnight
Low: 34 °F
Areas Fog
Sunday
High: 33 °F
Slight Chance
Rain and
Areas Fog
then Patchy
FogSunday Night
Low: 16 °F
Mostly Cloudy
Monday
High: 28 °F
Decreasing
CloudsMonday Night
Low: 21 °F⇑
Mostly Cloudy
Tuesday
High: 43 °F
Partly Sunny
Tuesday Night
Low: 37 °F
Mostly Cloudy
then Chance
Rain and
BreezyWednesday
High: 41 °F
Mostly Cloudy
and Breezy
then Mostly
Cloudy
Detailed Forecast
Overnight
Areas of fog. Otherwise, cloudy, with a steady temperature around 34. South wind around 8 mph.
Sunday
A 20 percent chance of rain before 9am. Areas of fog before 1pm. Otherwise, cloudy, with a high near 33. South wind 5 to 15 mph becoming north in the morning. Winds could gust as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 16. North wind 7 to 13 mph, with gusts as high as 20 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 28. North northeast wind 5 to 7 mph becoming light and variable.
Monday Night
Mostly cloudy, with a temperature falling to near 21 by 9pm, then rising to around 29 during the remainder of the night. South wind 6 to 16 mph, with gusts as high as 24 mph.
Tuesday
Partly sunny, with a high near 43. Southwest wind 14 to 16 mph, with gusts as high as 24 mph.
Tuesday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 37. Breezy, with a southwest wind 14 to 20 mph, with gusts as high as 30 mph.
Wednesday
Mostly cloudy, with a high near 41. Breezy.
Wednesday Night
Mostly cloudy, with a low around 22.
Thursday
A 30 percent chance of snow. Mostly cloudy, with a high near 31.
Thursday Night
Mostly cloudy, with a low around 11.
Friday
Partly sunny, with a high near 20.
Friday Night
Mostly cloudy, with a low around 2.
Saturday
Partly sunny, with a high near 16.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Decatur Airport IL
39.84°N 88.88°W (Elev. 650 ft)
39.84°N 88.88°W (Elev. 650 ft)
3:16 am CST Dec 7, 2025
4am CST Dec 7, 2025-6pm CST Dec 13, 2025
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