Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
81°F
27°C
| Humidity | 82% |
| Wind Speed | NE 12 mph |
| Barometer | 30.17 in (1021.0 mb) |
| Dewpoint | 75°F (24°C) |
| Visibility | 10.00 mi |
| Heat Index | 87°F (31°C) |
| Last update | 29 Jul 7:54 am CDT |
Extended Forecast for
Decatur Airport IL
Heat Advisory July 29, 12:00pm until July 29, 08:00pm
Today
High: 93 °F
Sunny
Tonight
Low: 74 °F
Mostly Clear
Wednesday
High: 90 °F
Mostly Sunny
then Chance
ShowersWednesday Night
Low: 67 °F
Chance
T-storms then
Showers
LikelyThursday
High: 76 °F
Chance
ShowersThursday Night
Low: 60 °F
Partly Cloudy
Friday
High: 77 °F
Sunny
Friday Night
Low: 57 °F
Mostly Clear
Saturday
High: 78 °F
Sunny
Detailed Forecast
Today
Sunny, with a high near 93. Heat index values as high as 103. East wind around 6 mph becoming light and variable.
Tonight
Mostly clear, with a low around 74. North wind around 5 mph becoming calm in the evening.
Wednesday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Northeast wind 3 to 7 mph.
Wednesday Night
A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 67. Northeast wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
A 40 percent chance of showers before 1pm. Mostly cloudy, with a high near 76. North northeast wind 10 to 14 mph, with gusts as high as 22 mph.
Thursday Night
Partly cloudy, with a low around 60. North northeast wind 10 to 13 mph, with gusts as high as 18 mph.
Friday
Sunny, with a high near 77. Northeast wind 10 to 14 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny, with a high near 78.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 62.
Monday
Mostly sunny, with a high near 83.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Decatur Airport IL
39.84°N 88.85°W (Elev. 686 ft)
39.84°N 88.85°W (Elev. 686 ft)
9:41 am CDT Jul 29, 2025
9am CDT Jul 29, 2025-6pm CDT Aug 4, 2025
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