Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
35°F
2°C
| Humidity | 46% |
| Wind Speed | W 14 mph |
| Barometer | 30.20 in (1023.1 mb) |
| Dewpoint | 16°F (-9°C) |
| Visibility | 10.00 mi |
| Wind Chill | 26°F (-3°C) |
| Last update | 26 Nov 6:54 pm CST |
Extended Forecast for
Blue Mound IL
Tonight

Low: 24 °F
Partly Cloudy
Thanksgiving Day

High: 38 °F
Sunny
Thursday Night

Low: 18 °F
Mostly Clear
Friday

High: 34 °F
Sunny
Friday Night
Low: 24 °F
Mostly Cloudy
then Chance
SnowSaturday
High: 35 °F
Snow then
Rain/SnowSaturday Night
Low: 24 °F
Rain then
Chance RainSunday

High: 30 °F
Mostly Cloudy
Sunday Night

Low: 12 °F
Mostly Cloudy
Detailed Forecast
Tonight
Partly cloudy, with a low around 24. West northwest wind 13 to 17 mph, with gusts as high as 26 mph.
Thanksgiving Day
Sunny, with a high near 38. West northwest wind 13 to 17 mph, with gusts as high as 23 mph.
Thursday Night
Mostly clear, with a low around 18. Northwest wind 7 to 10 mph, with gusts as high as 16 mph.
Friday
Sunny, with a high near 34. West northwest wind around 6 mph becoming calm in the afternoon.
Friday Night
A 50 percent chance of snow after midnight. Increasing clouds, with a low around 24. Light southeast wind increasing to 8 to 13 mph after midnight. Winds could gust as high as 20 mph.
Saturday
Snow before noon, then rain and snow. High near 35. South southeast wind 14 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday Night
Rain, mainly before midnight. Low around 24. South southeast wind 14 to 16 mph becoming west northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Mostly cloudy, with a high near 30.
Sunday Night
Mostly cloudy, with a low around 12.
Monday
Mostly cloudy, with a high near 23.
Monday Night
A chance of snow. Mostly cloudy, with a low around 11.
Tuesday
Mostly sunny, with a high near 25.
Tuesday Night
Partly cloudy, with a low around 12.
Wednesday
Partly sunny, with a high near 33.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT 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)
6:36 pm CST Nov 26, 2025
7pm CST Nov 26, 2025-6pm CST Dec 3, 2025



