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Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
78°F
26°C
| Humidity | 39% |
| Wind Speed | N 9 G 22 mph |
| Barometer | 30.16 in (1021.0 mb) |
| Dewpoint | 51°F (11°C) |
| Visibility | 10.00 mi |
| Heat Index | 79°F (26°C) |
| Last update | 4 Oct 2:54 pm CDT |
Extended Forecast for
Assumption IL
This Afternoon
High: 79 °F
Sunny
Tonight
Low: 46 °F
Clear
Monday
High: 74 °F
Sunny
Monday Night
Low: 46 °F
Clear
Tuesday
High: 77 °F
Sunny
Tuesday Night
Low: 52 °F
Clear
Wednesday
High: 83 °F
Sunny
Wednesday Night
Low: 53 °F
Mostly Clear
Thursday
High: 81 °F
Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 79. North northwest wind around 8 mph.
Tonight
Clear, with a low around 46. North wind 3 to 6 mph.
Monday
Sunny, with a high near 74. Northeast wind 3 to 6 mph.
Monday Night
Clear, with a low around 46. Light east northeast wind.
Tuesday
Sunny, with a high near 77. South southwest wind 5 to 7 mph.
Tuesday Night
Clear, with a low around 52. South southwest wind 3 to 6 mph.
Wednesday
Sunny, with a high near 83. West wind 5 to 7 mph.
Wednesday Night
Mostly clear, with a low around 53.
Thursday
Sunny, with a high near 81.
Thursday Night
Mostly clear, with a low around 52.
Friday
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 52.
Saturday
Sunny, with a high near 82.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Assumption IL
39.51°N 89.05°W (Elev. 636 ft)
39.51°N 89.05°W (Elev. 636 ft)
3:36 pm CDT Oct 4, 2026
3pm CDT Oct 4, 2026-6pm CDT Oct 10, 2026
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