Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
49°F
9°C
| Humidity | 52% |
| Wind Speed | S 9 mph |
| Barometer | 30.09 in (1019.0 mb) |
| Dewpoint | 32°F (0°C) |
| Visibility | 10.00 mi |
| Wind Chill | 45°F (7°C) |
| Last update | 25 Mar 8:54 am CDT |
Extended Forecast for
2 Miles ENE Harristown IL
Today
High: 73 °F
Mostly Sunny
Tonight
Low: 59 °F
Chance
T-stormsThursday
High: 87 °F
Sunny then
Chance
T-storms and
BreezyThursday Night
Low: 37 °F
T-storms and
BreezyFriday
High: 49 °F
Decreasing
CloudsFriday Night
Low: 29 °F
Mostly Clear
Saturday
High: 54 °F
Sunny
Saturday Night
Low: 38 °F
Partly Cloudy
Sunday
High: 61 °F
Partly Sunny
Detailed Forecast
Today
Mostly sunny, with a high near 73. South southwest wind 8 to 15 mph, with gusts as high as 22 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 3am. Mostly cloudy, with a low around 59. South wind 11 to 15 mph, with gusts as high as 22 mph.
Thursday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. Breezy, with a southwest wind 11 to 21 mph, with gusts as high as 31 mph.
Thursday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Low around 37. Breezy, with a west wind 13 to 22 mph becoming north northeast after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 49. North wind 16 to 18 mph, with gusts as high as 26 mph.
Friday Night
Mostly clear, with a low around 29. North wind 6 to 11 mph, with gusts as high as 17 mph.
Saturday
Sunny, with a high near 54. Light and variable wind becoming south southwest 6 to 11 mph in the morning. Winds could gust as high as 16 mph.
Saturday Night
Partly cloudy, with a low around 38.
Sunday
Partly sunny, with a high near 61.
Sunday Night
Mostly cloudy, with a low around 50.
Monday
Mostly sunny, with a high near 78.
Monday Night
A chance of rain. Mostly cloudy, with a low around 57.
Tuesday
A chance of rain. Partly sunny, with a high near 77.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
2 Miles ENE Harristown IL
39.84°N 89.03°W (Elev. 666 ft)
39.84°N 89.03°W (Elev. 666 ft)
6:26 am CDT Mar 25, 2026
9am CDT Mar 25, 2026-6pm CDT Mar 31, 2026
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