Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
51°F
11°C
| Humidity | 43% |
| Wind Speed | S 10 mph |
| Barometer | 30.09 in (1019.4 mb) |
| Dewpoint | 29°F (-2°C) |
| Visibility | 10.00 mi |
| Wind Chill | 47°F (8°C) |
| Last update | 13 Feb 4:54 pm CST |
Extended Forecast for
Decatur IL
Tonight

Low: 33 °F
Increasing
CloudsSaturday

High: 52 °F
Chance Rain
Saturday Night

Low: 40 °F
Rain Likely
and Patchy
FogSunday
High: 58 °F
Patchy Fog
then SunnySunday Night

Low: 37 °F
Mostly Clear
Washington's Birthday

High: 59 °F
Partly Sunny
Monday Night

Low: 42 °F
Mostly Cloudy
Tuesday

High: 60 °F
Mostly Cloudy
Tuesday Night

Low: 51 °F
Mostly Cloudy
Detailed Forecast
Tonight
Increasing clouds, with a low around 33. South wind 3 to 7 mph. Winds could gust as high as 15 mph.
Saturday
A 30 percent chance of rain, mainly after noon. Cloudy, with a high near 52. South wind 3 to 6 mph.
Saturday Night
Rain likely, mainly before midnight. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 40. South southeast wind around 6 mph becoming east northeast after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 58. East northeast wind around 6 mph.
Sunday Night
Mostly clear, with a low around 37. Calm wind becoming south around 5 mph after midnight.
Washington's Birthday
Partly sunny, with a high near 59. South wind 5 to 10 mph, with gusts as high as 16 mph.
Monday Night
Mostly cloudy, with a low around 42. South wind around 7 mph.
Tuesday
Mostly cloudy, with a high near 60.
Tuesday Night
Mostly cloudy, with a low around 51.
Wednesday
Partly sunny, with a high near 67.
Wednesday Night
Mostly cloudy, with a low around 42.
Thursday
A chance of rain. Partly sunny, with a high near 60.
Thursday Night
A chance of rain. Partly cloudy, with a low around 36.
Friday
Mostly sunny, with a high near 49.
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)
3:36 pm CST Feb 13, 2026
5pm CST Feb 13, 2026-6pm CST Feb 20, 2026


