Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Overcast
44°F
7°C
| Humidity | 40% |
| Wind Speed | E 12 mph |
| Barometer | 30.38 in (1029.3 mb) |
| Dewpoint | 21°F (-6°C) |
| Visibility | 10.00 mi |
| Wind Chill | 38°F (3°C) |
| Last update | 7 Apr 3:54 pm CDT |
Extended Forecast for
Decatur IL
Tonight
Low: 38 °F
Chance
SprinklesWednesday
High: 69 °F
Partly Sunny
then Mostly
Sunny and
BreezyWednesday Night
Low: 53 °F
Partly Cloudy
Thursday
High: 74 °F
Mostly Sunny
Thursday Night
Low: 54 °F
Mostly Cloudy
then Chance
ShowersFriday
High: 66 °F
Showers
LikelyFriday Night
Low: 44 °F
Mostly Cloudy
Saturday
High: 68 °F
Partly Sunny
Saturday Night
Low: 57 °F
Mostly Cloudy
Detailed Forecast
Tonight
A chance of sprinkles between 11pm and midnight. Mostly cloudy, with a low around 38. East wind 8 to 10 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a high near 69. Breezy, with a south wind 11 to 20 mph, with gusts as high as 29 mph.
Wednesday Night
Partly cloudy, with a low around 53. South wind around 16 mph, with gusts as high as 25 mph.
Thursday
Mostly sunny, with a high near 74. Southwest wind 11 to 14 mph, with gusts as high as 22 mph.
Thursday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 54. South wind 9 to 13 mph, with gusts as high as 21 mph.
Friday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 66. Southwest wind 9 to 11 mph becoming north northwest in the afternoon. Winds could gust as high as 17 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Mostly cloudy, with a low around 44. East northeast wind around 8 mph.
Saturday
Partly sunny, with a high near 68.
Saturday Night
Mostly cloudy, with a low around 57.
Sunday
Partly sunny, with a high near 79.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 64.
Monday
Showers and thunderstorms likely. Partly sunny, with a high near 81. Breezy.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 77.
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)
3:36 pm CDT Apr 7, 2026
4pm CDT Apr 7, 2026-6pm CDT Apr 14, 2026
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