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Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
A Few Clouds
79°F
26°C
| Humidity | 67% |
| Wind Speed | N 5 mph |
| Barometer | 30.02 in (1016.2 mb) |
| Dewpoint | 67°F (19°C) |
| Visibility | 10.00 mi |
| Heat Index | 81°F (27°C) |
| Last update | 14 Oct 3:54 pm CDT |
Extended Forecast for
Decatur IL
Tonight
Low: 61 °F
Mostly Cloudy
then Slight
Chance
ShowersThursday
High: 76 °F
Showers
Thursday Night
Low: 48 °F
Showers
Likely and
BreezyFriday
High: 57 °F
Breezy.
Partly Sunny
then Chance
ShowersFriday Night
Low: 38 °F
Decreasing
CloudsSaturday
High: 60 °F
Sunny
Saturday Night
Low: 37 °F
Clear
Sunday
High: 67 °F
Areas Frost
then SunnySunday Night
Low: 41 °F
Mostly Clear
Detailed Forecast
Tonight
A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 61. East northeast wind 6 to 10 mph, with gusts as high as 16 mph.
Thursday
Showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. High near 76. East wind 7 to 10 mph becoming south in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and thunderstorms likely before 1am, then a chance of showers between 1am and 4am. Mostly cloudy, with a low around 48. Breezy, with a west southwest wind 10 to 15 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 57. Breezy, with a northwest wind around 23 mph, with gusts as high as 34 mph.
Friday Night
Mostly cloudy, then gradually becoming clear, with a low around 38. North wind 11 to 16 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 60. North wind around 6 mph becoming calm in the afternoon.
Saturday Night
Clear, with a low around 37. Calm wind becoming south southeast around 5 mph after midnight.
Sunday
Areas of frost before 7am. Otherwise, sunny, with a high near 67.
Sunday Night
Mostly clear, with a low around 41.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Mostly sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
Sunny, with a high near 78.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Decatur IL
39.86°N 88.94°W (Elev. 682 ft)
39.86°N 88.94°W (Elev. 682 ft)
3:36 pm CDT Oct 14, 2026
4pm CDT Oct 14, 2026-6pm CDT Oct 21, 2026
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