Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
A Few Clouds
80°F
27°C
| Humidity | 54% |
| Wind Speed | N 9 G 17 mph |
| Barometer | 30.03 in (1016.4 mb) |
| Dewpoint | 62°F (17°C) |
| Visibility | 10.00 mi |
| Heat Index | 81°F (27°C) |
| Last update | 22 Aug 1:54 pm CDT |
Extended Forecast for
Decatur IL
This Afternoon
High: 81 °F
Scattered
SprinklesTonight
Low: 59 °F
Scattered
SprinklesSunday
High: 81 °F
Sunny
Sunday Night
Low: 58 °F
Partly Cloudy
Monday
High: 81 °F
Mostly Sunny
Monday Night
Low: 60 °F
Partly Cloudy
Tuesday
High: 83 °F
Mostly Sunny
Tuesday Night
Low: 64 °F
Partly Cloudy
Wednesday
High: 86 °F
Mostly Sunny
Detailed Forecast
This Afternoon
Scattered sprinkles after 5pm. Sunny, with a high near 81. Northwest wind 11 to 13 mph, with gusts as high as 20 mph.
Tonight
Scattered sprinkles before 7pm. Clear, with a low around 59. Northwest wind 3 to 8 mph.
Sunday
Sunny, with a high near 81. Light northwest wind increasing to 5 to 9 mph in the morning.
Sunday Night
Partly cloudy, with a low around 58. North northwest wind around 6 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 81. Light and variable wind.
Monday Night
Partly cloudy, with a low around 60. Light east southeast wind.
Tuesday
Mostly sunny, with a high near 83. South southeast wind 3 to 5 mph.
Tuesday Night
Partly cloudy, with a low around 64.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 84.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Decatur IL
39.86°N 88.94°W (Elev. 682 ft)
39.86°N 88.94°W (Elev. 682 ft)
1:51 pm CDT Aug 22, 2026
2pm CDT Aug 22, 2026-6pm CDT Aug 28, 2026
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