National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

60°F

16°C

Humidity 70%
Wind Speed NW 6 mph
Barometer 29.94 in (1013.8 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 28 Apr 5:54 pm CDT
Extended Forecast for

Macon IL

  • Tonight

    Tonight: Showers and thunderstorms likely before 1am, then a chance of showers. Mostly cloudy, with a low around 49. West northwest wind 5 to 9 mph becoming north northeast in the evening. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 49 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Mostly sunny, with a high near 61. Northwest wind 13 to 17 mph, with gusts as high as 24 mph.

    High: 61 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 40. North northwest wind 5 to 14 mph, with gusts as high as 20 mph.

    Low: 40 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 63. West northwest wind 5 to 14 mph, with gusts as high as 20 mph.

    High: 63 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 42. North wind 6 to 10 mph, with gusts as high as 15 mph.

    Low: 42 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 57. North northwest wind 7 to 13 mph, with gusts as high as 17 mph.

    High: 57 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Areas of frost after 5am. Otherwise, partly cloudy, with a low around 36. North wind 5 to 10 mph becoming light north northeast after midnight.

    Low: 36 °F

    Partly Cloudy
    then Areas
    Frost

  • Saturday

    Saturday: Areas of frost before 7am. Otherwise, mostly sunny, with a high near 57.

    High: 57 °F

    Areas Frost
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers and thunderstorms likely before 1am, then a chance of showers. Mostly cloudy, with a low around 49. West northwest wind 5 to 9 mph becoming north northeast in the evening. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Mostly sunny, with a high near 61. Northwest wind 13 to 17 mph, with gusts as high as 24 mph.
Wednesday Night
Mostly clear, with a low around 40. North northwest wind 5 to 14 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 63. West northwest wind 5 to 14 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 42. North wind 6 to 10 mph, with gusts as high as 15 mph.
Friday
Mostly sunny, with a high near 57. North northwest wind 7 to 13 mph, with gusts as high as 17 mph.
Friday Night
Areas of frost after 5am. Otherwise, partly cloudy, with a low around 36. North wind 5 to 10 mph becoming light north northeast after midnight.
Saturday
Areas of frost before 7am. Otherwise, mostly sunny, with a high near 57.
Saturday Night
Mostly clear, with a low around 40.
Sunday
Sunny, with a high near 67.
Sunday Night
Partly cloudy, with a low around 46.
Monday
Mostly sunny, with a high near 68.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
A chance of showers. Mostly sunny, with a high near 72.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Macon IL
 39.71°N 89.01°W (Elev. 699 ft)
Last Update:
6:35 pm CDT Apr 28, 2026
Forecast Valid:
6pm CDT Apr 28, 2026-6pm CDT May 5, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation