Current conditions at

Decatur Airport (KDEC)

Lat: 39.83° N Lon: 88.87° W Elev: 670 ft.

Overcast

39°F

4°C

Humidity 79%
Wind Speed N 18 G 32 mph
Barometer 30.01 in (1016.2 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 11 Mar 4:54 pm CDT
Detailed forecast for

Macon County

This Afternoon
Rain likely. Breezy and much cooler. Near steady temperature around 40. Temperature falling into the upper 30s late. Northwest winds 20 to 25 mph with gusts up to 35 mph. Chance of rain 70 percent.
Tonight
Mostly cloudy in the evening, then clearing. Much cooler with lows in the upper 20s. Northwest winds 15 to 20 mph. Gusts up to 35 mph in the evening.
Thursday
Sunny, cooler with highs around 50. West winds 10 to 15 mph.
Thursday Night
Mostly cloudy and breezy. Not as cool with lows around 40. South winds 20 to 25 mph with gusts up to 35 mph.
Friday
Mostly sunny and breezy. Highs in the mid 50s. West winds 15 to 25 mph with gusts up to 35 mph.
Friday Night And Saturday
Mostly cloudy. Lows in the lower 30s. Highs in the lower 50s.
Saturday Night
Cloudy. Not as cool with lows in the mid 40s.
Sunday
Rain likely in the morning, then rain in the afternoon. Windy with highs in the lower 60s. Chance of rain 90 percent.
Sunday Night
Mostly cloudy. A chance of rain and snow in the evening. Windy and much cooler with lows around 20. Chance of precipitation 50 percent.
Monday
Mostly cloudy in the morning, then becoming partly sunny. Brisk and much cooler with highs in the upper 20s.
Monday Night And Tuesday
Partly cloudy. Lows 10 to 15. Highs in the mid 30s. Wind chill values as low as zero.



Basemap Options
Click map to change the forecast location
Loading map...
127 PM CDT Wed Mar 11 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database