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Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Overcast
55°F
13°C
| Humidity | 87% |
| Wind Speed | NE 5 mph |
| Barometer | 30.18 in (1021.9 mb) |
| Dewpoint | 51°F (11°C) |
| Visibility | 10.00 mi |
| Wind Chill | 54°F (12°C) |
| Last update | 16 Oct 6:54 am CDT |
Extended Forecast for
Decatur IL
Today
High: 77 °F
Mostly Sunny
Tonight
Low: 58 °F
Mostly Clear
Friday
High: 80 °F
Partly Sunny
Friday Night
Low: 63 °F
Partly Cloudy
then Chance
ShowersSaturday
High: 79 °F
Showers
Saturday Night
Low: 49 °F
Showers
Sunday
High: 63 °F
Chance
Showers and
BreezySunday Night
Low: 42 °F
Clear
Monday
High: 70 °F
Sunny
Detailed Forecast
Today
Mostly sunny, with a high near 77. East southeast wind around 9 mph, with gusts as high as 15 mph.
Tonight
Mostly clear, with a low around 58. South southeast wind 8 to 10 mph, with gusts as high as 17 mph.
Friday
Partly sunny, with a high near 80. South wind 10 to 14 mph, with gusts as high as 21 mph.
Friday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 63. South wind 11 to 13 mph, with gusts as high as 18 mph.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then showers between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 79. Southwest wind 11 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday Night
Showers and possibly a thunderstorm before 10pm, then showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Low around 49. South southwest wind 9 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
A 30 percent chance of showers before 1pm. Sunny, with a high near 63. Breezy, with a west wind 18 to 21 mph, with gusts as high as 33 mph.
Sunday Night
Clear, with a low around 42.
Monday
Sunny, with a high near 70.
Monday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 51.
Tuesday
A chance of showers. Mostly sunny, with a high near 69.
Tuesday Night
Mostly clear, with a low around 43.
Wednesday
Sunny, with a high near 63.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Decatur IL
39.84°N 88.94°W (Elev. 692 ft)
39.84°N 88.94°W (Elev. 692 ft)
6:36 am CDT Oct 16, 2025
7am CDT Oct 16, 2025-6pm CDT Oct 22, 2025
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