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Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
76°F
24°C
| Humidity | 91% |
| Wind Speed | S 5 mph |
| Barometer | 29.95 in (1013.3 mb) |
| Dewpoint | 73°F (23°C) |
| Visibility | 10.00 mi |
| Heat Index | 76°F (24°C) |
| Last update | 15 Jul 11:54 pm CDT |
Extended Forecast for
Decatur IL
Overnight
Low: 71 °F
Partly Cloudy
Wednesday
High: 91 °F
Mostly Sunny
then Chance
T-stormsWednesday Night
Low: 72 °F
Chance
T-stormsThursday
High: 84 °F
Chance
T-stormsThursday Night
Low: 65 °F
Chance
T-stormsFriday
High: 82 °F
Partly Sunny
Friday Night
Low: 70 °F
Mostly Cloudy
then Chance
T-stormsSaturday
High: 88 °F
Chance
T-stormsSaturday Night
Low: 73 °F
Chance
T-storms
Detailed Forecast
Overnight
Partly cloudy, with a low around 71. South wind around 5 mph becoming calm.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 91. Heat index values as high as 101. Southwest wind 5 to 10 mph.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Southwest wind 6 to 8 mph.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 84. West northwest wind 6 to 9 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 65. Northeast wind around 6 mph.
Friday
Partly sunny, with a high near 82. East northeast wind around 6 mph.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. South southeast wind 3 to 5 mph.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.
Sunday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 73.
Tuesday
Mostly sunny, with a high near 91.
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)
5:56 pm CDT Jul 15, 2025
12am CDT Jul 16, 2025-6pm CDT Jul 22, 2025
Additional Resources
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