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Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Light Rain Fog/Mist
69°F
21°C
| Humidity | 96% |
| Wind Speed | SE 10 mph |
| Barometer | 29.97 in (1014.4 mb) |
| Dewpoint | 68°F (20°C) |
| Visibility | 3.00 mi |
| Last update | 15 Oct 12:54 pm CDT |
Extended Forecast for
Decatur Airport IL
This Afternoon
High: 76 °F
Showers
Tonight
Low: 46 °F
Showers
Likely then
Chance
Showers and
BreezyFriday
High: 55 °F
Breezy.
Mostly Cloudy
then Chance
ShowersFriday Night
Low: 35 °F
Decreasing
CloudsSaturday
High: 58 °F
Sunny
Saturday Night
Low: 35 °F
Clear then
Areas FrostSunday
High: 67 °F
Areas Frost
then SunnySunday Night
Low: 38 °F
Mostly Clear
Monday
High: 70 °F
Mostly Sunny
Detailed Forecast
This Afternoon
Showers and possibly a thunderstorm, mainly before 4pm, then a chance of showers and thunderstorms after 4pm. High near 76. South wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 46. Breezy, with a southwest wind 14 to 20 mph becoming west northwest after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A 30 percent chance of showers, mainly after 4pm. Mostly cloudy, with a high near 55. Breezy, with a northwest wind around 21 mph, with gusts as high as 33 mph.
Friday Night
Mostly cloudy, then gradually becoming clear, with a low around 35. North wind 11 to 17 mph, with gusts as high as 26 mph.
Saturday
Sunny, with a high near 58. North wind around 6 mph becoming calm in the afternoon.
Saturday Night
Areas of frost after 3am. Otherwise, clear, with a low around 35. Calm wind becoming south southeast around 5 mph after midnight.
Sunday
Areas of frost before 8am. Otherwise, sunny, with a high near 67. South wind 5 to 9 mph.
Sunday Night
Mostly clear, with a low around 38.
Monday
Mostly sunny, with a high near 70.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Sunny, with a high near 78.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Decatur Airport IL
39.86°N 88.88°W (Elev. 610 ft)
39.86°N 88.88°W (Elev. 610 ft)
1:25 pm CDT Oct 15, 2026
1pm CDT Oct 15, 2026-6pm CDT Oct 21, 2026
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