Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Overcast
47°F
8°C
| Humidity | 50% |
| Wind Speed | SW 5 mph |
| Barometer | 30.28 in (1025.8 mb) |
| Dewpoint | 29°F (-2°C) |
| Visibility | 10.00 mi |
| Wind Chill | 45°F (7°C) |
| Last update | 12 Feb 12:54 pm CST |
Extended Forecast for
Decatur IL
This Afternoon

High: 49 °F
Mostly Cloudy
Tonight

Low: 30 °F
Mostly Cloudy
Friday

High: 55 °F
Sunny
Friday Night

Low: 33 °F
Increasing
CloudsSaturday
High: 51 °F
Mostly Cloudy
then Chance
RainSaturday Night

Low: 40 °F
Rain Likely
Sunday

High: 57 °F
Mostly Sunny
Sunday Night

Low: 35 °F
Mostly Clear
Washington's Birthday

High: 58 °F
Partly Sunny
Detailed Forecast
This Afternoon
Mostly cloudy, with a high near 49. Southwest wind around 5 mph becoming southeast.
Tonight
Mostly cloudy, with a low around 30. Southeast wind around 6 mph.
Friday
Sunny, with a high near 55. South southwest wind 6 to 14 mph, with gusts as high as 20 mph.
Friday Night
Increasing clouds, with a low around 33. South wind around 6 mph becoming calm after midnight.
Saturday
A 30 percent chance of rain after noon. Cloudy, with a high near 51. South southeast wind 3 to 6 mph.
Saturday Night
Rain likely, mainly before midnight. Cloudy, with a low around 40. Southeast wind around 7 mph becoming east northeast after midnight. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Mostly sunny, with a high near 57. Northeast wind around 7 mph.
Sunday Night
Mostly clear, with a low around 35.
Washington's Birthday
Partly sunny, with a high near 58.
Monday Night
Mostly cloudy, with a low around 42.
Tuesday
Mostly cloudy, with a high near 61.
Tuesday Night
Mostly cloudy, with a low around 52.
Wednesday
Mostly cloudy, with a high near 67.
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)
1:16 pm CST Feb 12, 2026
1pm CST Feb 12, 2026-6pm CST Feb 18, 2026


