Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Partly Cloudy
82°F
28°C
| Humidity | 46% |
| Wind Speed | Calm |
| Barometer | 30.16 in (1020.9 mb) |
| Dewpoint | 59°F (15°C) |
| Visibility | 7.00 mi |
| Heat Index | 82°F (28°C) |
| Last update | 28 Aug 12:54 pm CDT |
Extended Forecast for
Decatur IL
This Afternoon
High: 84 °F
Sunny
Tonight
Low: 62 °F
Mostly Clear
Saturday
High: 86 °F
Increasing
CloudsSaturday Night
Low: 69 °F
Partly Cloudy
Sunday
High: 92 °F
Mostly Sunny
Sunday Night
Low: 73 °F
Mostly Clear
Monday
High: 96 °F
Hot
Monday Night
Low: 75 °F
Mostly Clear
Tuesday
High: 98 °F
Hot
Detailed Forecast
This Afternoon
Sunny, with a high near 84. North northeast wind 3 to 5 mph.
Tonight
Mostly clear, with a low around 62. Light and variable wind.
Saturday
Increasing clouds, with a high near 86. South wind 5 to 8 mph.
Saturday Night
Partly cloudy, with a low around 69. South wind 6 to 9 mph.
Sunday
Mostly sunny, with a high near 92. South southwest wind 9 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 73. South wind around 10 mph, with gusts as high as 15 mph.
Monday
Sunny and hot, with a high near 96. South southwest wind around 11 mph, with gusts as high as 17 mph.
Monday Night
Mostly clear, with a low around 75.
Tuesday
Sunny and hot, with a high near 98.
Tuesday Night
Partly cloudy, with a low around 77.
Wednesday
Mostly sunny and hot, with a high near 98.
Wednesday Night
Mostly clear, with a low around 75.
Thursday
Mostly sunny and hot, with a high near 96.
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)
1:26 pm CDT Aug 28, 2026
1pm CDT Aug 28, 2026-6pm CDT Sep 3, 2026
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