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Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
72°F
22°C
| Humidity | 37% |
| Wind Speed | SE 8 mph |
| Barometer | 30.17 in (1021.7 mb) |
| Dewpoint | 44°F (7°C) |
| Visibility | 10.00 mi |
| Last update | 3 Oct 3:54 pm CDT |
Extended Forecast for
Chestnut IL
Tonight
Low: 47 °F
Clear
Sunday
High: 76 °F
Sunny
Sunday Night
Low: 47 °F
Mostly Clear
Monday
High: 72 °F
Sunny
Monday Night
Low: 44 °F
Clear
Tuesday
High: 75 °F
Sunny
Tuesday Night
Low: 51 °F
Mostly Clear
Wednesday
High: 80 °F
Sunny
Wednesday Night
Low: 51 °F
Mostly Clear
Detailed Forecast
Tonight
Clear, with a low around 47. East southeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 76. Light and variable wind becoming north northwest 5 to 10 mph in the morning.
Sunday Night
Mostly clear, with a low around 47. North wind 6 to 8 mph.
Monday
Sunny, with a high near 72. East northeast wind 5 to 7 mph.
Monday Night
Clear, with a low around 44. East southeast wind around 6 mph.
Tuesday
Sunny, with a high near 75. South wind 6 to 9 mph.
Tuesday Night
Mostly clear, with a low around 51. South wind around 7 mph.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Mostly clear, with a low around 51.
Thursday
Sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 53.
Friday
Sunny, with a high near 80.
Friday Night
Clear, with a low around 55.
Saturday
Sunny, with a high near 83.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Chestnut IL
40.05°N 89.19°W (Elev. 623 ft)
40.05°N 89.19°W (Elev. 623 ft)
3:36 pm CDT Oct 3, 2026
4pm CDT Oct 3, 2026-6pm CDT Oct 10, 2026
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