News Headlines
Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Partly Cloudy
69°F
21°C
| Humidity | 93% |
| Wind Speed | Calm |
| Barometer | 29.96 in (1014.0 mb) |
| Dewpoint | 67°F (19°C) |
| Visibility | 10.00 mi |
| Last update | 14 Oct 7:54 am CDT |
Extended Forecast for
Chestnut IL
Today
High: 75 °F
Chance
ShowersTonight
Low: 59 °F
Mostly Cloudy
then Slight
Chance
T-stormsThursday
High: 74 °F
Showers
Thursday Night
Low: 47 °F
Showers and
BreezyFriday
High: 56 °F
Partly Sunny
and BreezyFriday Night
Low: 36 °F
Mostly Clear
then Areas
FrostSaturday
High: 59 °F
Areas Frost
then SunnySaturday Night
Low: 37 °F
Clear
Sunday
High: 69 °F
Areas Frost
then Sunny
Detailed Forecast
Today
A 40 percent chance of showers, mainly before 3pm. Mostly cloudy, with a high near 75. North wind 5 to 9 mph.
Tonight
A slight chance of showers before 1am, then a slight chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 59. East northeast wind 9 to 11 mph, with gusts as high as 16 mph. Chance of precipitation is 20%.
Thursday
Showers and thunderstorms, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. High near 74. East wind around 9 mph becoming south southwest in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers likely and possibly a thunderstorm before 7pm, then showers between 7pm and 1am. Low around 47. Breezy, with a west southwest wind 10 to 15 mph becoming northwest 17 to 22 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Partly sunny, with a high near 56. Breezy, with a northwest wind 23 to 25 mph, with gusts as high as 36 mph.
Friday Night
Areas of frost after 5am. Otherwise, mostly clear, with a low around 36. North wind 5 to 15 mph, with gusts as high as 21 mph.
Saturday
Areas of frost before 8am. Otherwise, sunny, with a high near 59. Light and variable wind.
Saturday Night
Clear, with a low around 37.
Sunday
Areas of frost before 7am. Otherwise, sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Partly sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 76.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Chestnut IL
40.05°N 89.19°W (Elev. 623 ft)
40.05°N 89.19°W (Elev. 623 ft)
7:36 am CDT Oct 14, 2026
8am CDT Oct 14, 2026-6pm CDT Oct 20, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
