Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Light Rain
59°F
15°C
| Humidity | 93% |
| Wind Speed | SW 17 G 28 mph |
| Barometer | 29.82 in (1009.5 mb) |
| Dewpoint | 57°F (14°C) |
| Visibility | 9.00 mi |
| Last update | 7 Mar 6:54 am CST |
Extended Forecast for
Decatur IL
Today
High: 63 °F⇓
Showers then
Slight Chance
ShowersTonight
Low: 35 °F
Decreasing
CloudsSunday
High: 62 °F
Sunny
Sunday Night
Low: 45 °F
Clear
Monday
High: 73 °F
Sunny
Monday Night
Low: 56 °F
Mostly Clear
Tuesday
High: 76 °F
Mostly Sunny
then Showers
LikelyTuesday Night
Low: 48 °F
Showers and
BreezyWednesday
High: 60 °F
Breezy.
Showers then
Chance
Showers
Detailed Forecast
Today
Showers and thunderstorms before 11am, then a slight chance of showers between 11am and 1pm. Temperature rising to near 63 by 9am, then falling to around 51 during the remainder of the day. West wind 14 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 35. West northwest wind 6 to 13 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 62. Southwest wind 6 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Clear, with a low around 45. South southwest wind around 11 mph, with gusts as high as 21 mph.
Monday
Sunny, with a high near 73. South southwest wind 11 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 56. South southwest wind around 10 mph, with gusts as high as 18 mph.
Tuesday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 76. South wind 9 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers, with thunderstorms also possible after midnight. Low around 48. Breezy. Chance of precipitation is 90%.
Wednesday
Showers, mainly before noon. High near 60. Breezy. Chance of precipitation is 80%.
Wednesday Night
Mostly cloudy, with a low around 31.
Thursday
Mostly sunny, with a high near 49.
Thursday Night
Mostly cloudy, with a low around 38.
Friday
Mostly cloudy, with a high near 60. Breezy.
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)
6:36 am CST Mar 7, 2026
6am CST Mar 7, 2026-6pm CDT Mar 13, 2026
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