


Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
76°F
24°C
Humidity | 85% |
Wind Speed | SW 7 mph |
Barometer | 29.89 in (1011.7 mb) |
Dewpoint | 71°F (22°C) |
Visibility | 10.00 mi |
Heat Index | 77°F (25°C) |
Last update | 16 Jul 5:54 pm CDT |
Extended Forecast for
Decatur Airport IL
Tonight
Low: 72 °F
Chance
T-stormsThursday
High: 82 °F
Chance
T-stormsThursday Night
Low: 66 °F
Slight Chance
T-stormsFriday
High: 84 °F
Mostly Cloudy
then Chance
T-stormsFriday Night
Low: 73 °F
Mostly Cloudy
then Chance
T-stormsSaturday
High: 89 °F
T-storms
LikelySaturday Night
Low: 74 °F
Chance
T-stormsSunday
High: 87 °F
Chance
T-stormsSunday Night
Low: 72 °F
Chance
T-storms
Detailed Forecast
Tonight
A 50 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 72. Southwest wind 5 to 13 mph, with gusts as high as 22 mph.
Thursday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 82. Northwest wind 8 to 10 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66. North wind 6 to 8 mph becoming east northeast after midnight.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. East northeast wind 6 to 8 mph becoming south southeast in the afternoon.
Friday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 73. South southeast wind around 6 mph.
Saturday
Showers and thunderstorms likely. Partly sunny, with a high near 89. Southwest wind 7 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. South southwest wind around 6 mph.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 75.
Tuesday
Mostly sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 76.
Wednesday
Sunny, with a high near 94.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Decatur Airport IL
39.84°N 88.88°W (Elev. 650 ft)
39.84°N 88.88°W (Elev. 650 ft)
6:11 pm CDT Jul 16, 2025
6pm CDT Jul 16, 2025-6pm CDT Jul 23, 2025