Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
75°F
24°C
| Humidity | 69% |
| Wind Speed | N 8 mph |
| Barometer | 30.04 in (1016.8 mb) |
| Dewpoint | 64°F (18°C) |
| Visibility | 10.00 mi |
| Last update | 27 Aug 9:54 am CDT |
Extended Forecast for
Blue Mound IL
Today
High: 84 °F
Sunny
Tonight
Low: 60 °F
Mostly Clear
Friday
High: 84 °F
Sunny
Friday Night
Low: 59 °F
Mostly Clear
Saturday
High: 86 °F
Mostly Sunny
Saturday Night
Low: 66 °F
Partly Cloudy
Sunday
High: 92 °F
Mostly Sunny
Sunday Night
Low: 72 °F
Mostly Clear
Monday
High: 94 °F
Mostly Sunny
Detailed Forecast
Today
Sunny, with a high near 84. North northwest wind 5 to 8 mph.
Tonight
Mostly clear, with a low around 60. North wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 84. Light north northeast wind.
Friday Night
Mostly clear, with a low around 59. Light and variable wind.
Saturday
Mostly sunny, with a high near 86. South wind 5 to 7 mph.
Saturday Night
Partly cloudy, with a low around 66. South southeast wind 7 to 9 mph, with gusts as high as 15 mph.
Sunday
Mostly sunny, with a high near 92. South wind 10 to 16 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 72.
Monday
Mostly sunny, with a high near 94.
Monday Night
Partly cloudy, with a low around 74.
Tuesday
Mostly sunny, with a high near 94.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Sunny, with a high near 94.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Blue Mound IL
39.69°N 89.12°W (Elev. 614 ft)
39.69°N 89.12°W (Elev. 614 ft)
9:37 am CDT Aug 27, 2026
9am CDT Aug 27, 2026-6pm CDT Sep 2, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
