Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Overcast
44°F
7°C
| Humidity | 89% |
| Wind Speed | N 10 mph |
| Barometer | 29.91 in (1013.1 mb) |
| Dewpoint | 41°F (5°C) |
| Visibility | 10.00 mi |
| Wind Chill | 39°F (4°C) |
| Last update | 12 Nov 8:54 am CST |
Extended Forecast for
Decatur IL
Today
High: 46 °F
Slight Chance
RainTonight
Low: 32 °F
Mostly Cloudy
Friday
High: 43 °F
Slight Chance
Snow then
Partly SunnyFriday Night
Low: 25 °F
Mostly Clear
Saturday
High: 45 °F
Sunny
Saturday Night
Low: 25 °F
Clear
Sunday
High: 49 °F
Sunny
Sunday Night
Low: 27 °F
Mostly Clear
Monday
High: 50 °F
Sunny
Detailed Forecast
Today
A 20 percent chance of rain before 4pm. Mostly cloudy, with a high near 46. North northwest wind 14 to 18 mph, with gusts as high as 29 mph.
Tonight
Mostly cloudy, with a low around 32. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Friday
A 20 percent chance of snow before 11am. Partly sunny, with a high near 43. North northwest wind 10 to 15 mph, with gusts as high as 22 mph.
Friday Night
Mostly clear, with a low around 25. North northwest wind 5 to 9 mph becoming light northwest in the evening. Winds could gust as high as 15 mph.
Saturday
Sunny, with a high near 45. Northwest wind 3 to 6 mph.
Saturday Night
Clear, with a low around 25. Light north wind.
Sunday
Sunny, with a high near 49. Calm wind.
Sunday Night
Mostly clear, with a low around 27.
Monday
Sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 27.
Tuesday
Sunny, with a high near 52.
Tuesday Night
Clear, with a low around 28.
Wednesday
Sunny, with a high near 56.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Decatur IL
39.86°N 88.97°W (Elev. 676 ft)
39.86°N 88.97°W (Elev. 676 ft)
9:31 am CST Nov 12, 2026
9am CST Nov 12, 2026-6pm CST Nov 18, 2026
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