Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fog/Mist
43°F
6°C
| Humidity | 97% |
| Wind Speed | E 9 mph |
| Barometer | 29.97 in (1015.1 mb) |
| Dewpoint | 42°F (6°C) |
| Visibility | 3.00 mi |
| Wind Chill | 38°F (3°C) |
| Last update | 27 Dec 5:54 am CST |
Extended Forecast for
Macon IL
Dense Fog Advisory until December 27, 10:00am
NOW until 10:00am Sat
Dense Fog Advisory
Today
High: 56 °F
Patchy Dense
Fog then
Mostly CloudyTonight
Low: 53 °F⇑
Chance
ShowersSunday
High: 66 °F
Chance
Showers then
Showers and
BreezySunday Night
Low: 15 °F
Blustery.
Chance
Showers then
Mostly CloudyMonday
High: 23 °F
Partly Sunny
and BlusteryMonday Night
Low: 13 °F
Partly Cloudy
and Blustery
then Mostly
ClearTuesday
High: 28 °F
Mostly Sunny
Tuesday Night
Low: 22 °F
Partly Cloudy
Detailed Forecast
Today
Patchy dense fog before 9am. Otherwise, mostly cloudy, with a high near 56. Southeast wind 6 to 13 mph, with gusts as high as 22 mph.
Tonight
A 40 percent chance of showers, mainly after midnight. Cloudy, with a temperature rising to around 60 by 4am. South wind 10 to 14 mph, with gusts as high as 22 mph.
Sunday
A chance of showers and thunderstorms before noon, then showers between noon and 3pm, then showers and possibly a thunderstorm after 3pm. High near 66. Breezy, with a south wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A 50 percent chance of showers before midnight. Mostly cloudy, with a low around 15. Wind chill values between -1 and 9. Blustery, with a west northwest wind 22 to 29 mph, with gusts as high as 39 mph.
Monday
Partly sunny, with a high near 23. Blustery, with a west northwest wind 22 to 29 mph, with gusts as high as 45 mph.
Monday Night
Mostly clear, with a low around 13. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 31 mph.
Tuesday
Mostly sunny, with a high near 28. West wind 10 to 14 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 22.
Wednesday
Partly sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 16.
New Year's Day
Mostly sunny, with a high near 25.
Thursday Night
Mostly clear, with a low around 10.
Friday
Mostly sunny, with a high near 26.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Macon IL
39.71°N 89.01°W (Elev. 699 ft)
39.71°N 89.01°W (Elev. 699 ft)
3:16 am CST Dec 27, 2025
6am CST Dec 27, 2025-6pm CST Jan 2, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
