Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Overcast
57°F
14°C
| Humidity | 96% |
| Wind Speed | S 3 mph |
| Barometer | 29.63 in (1003.0 mb) |
| Dewpoint | 56°F (13°C) |
| Visibility | 10.00 mi |
| Last update | 11 Mar 5:54 am CDT |
Extended Forecast for
Decatur IL
Flash Flood Warning until March 11, 07:00am
NOW until 7:00am Wed
Flash Flood Warning
Today
High: 61 °F⇓
T-storms then
Showers
Likely and
BreezyTonight
Low: 29 °F
Mostly Clear
and Blustery
then ClearThursday
High: 49 °F
Increasing
CloudsThursday Night
Low: 41 °F
Mostly Cloudy
and BreezyFriday
High: 55 °F
Partly Sunny
and BreezyFriday Night
Low: 33 °F
Mostly Cloudy
Saturday
High: 54 °F
Mostly Cloudy
Saturday Night
Low: 46 °F
Mostly Cloudy
then Chance
Showers
Detailed Forecast
Today
Showers and possibly a thunderstorm before 2pm, then a chance of showers. Temperature falling to around 41 by 4pm. Breezy, with a southwest wind 14 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Mostly cloudy during the early evening, then gradual clearing, with a low around 29. Blustery, with a north northwest wind 15 to 20 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 30 mph.
Thursday
Increasing clouds, with a high near 49. West wind 6 to 13 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 41. Breezy, with a south wind 13 to 23 mph, with gusts as high as 36 mph.
Friday
Partly sunny, with a high near 55. Breezy, with a west wind 16 to 21 mph, with gusts as high as 34 mph.
Friday Night
Mostly cloudy, with a low around 33. West northwest wind 6 to 9 mph becoming east northeast after midnight. Winds could gust as high as 16 mph.
Saturday
Mostly cloudy, with a high near 54. East southeast wind 8 to 13 mph, with gusts as high as 20 mph.
Saturday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 46.
Sunday
Showers. High near 60. Breezy. Chance of precipitation is 90%.
Sunday Night
A chance of rain and snow showers before 1am. Mostly cloudy, with a low around 21. Blustery. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 31. Blustery.
Monday Night
Partly cloudy, with a low around 16.
Tuesday
Partly sunny, with a high near 36.
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)
5:26 am CDT Mar 11, 2026
6am CDT Mar 11, 2026-6pm CDT Mar 17, 2026
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