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.

Overcast

80°F

27°C

Humidity 82%
Wind Speed NW 8 mph
Barometer 30.04 in (1016.4 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 30 Jul 9:54 pm CDT
Extended Forecast for

Macon IL

  • Tonight

    Tonight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. North wind around 6 mph. Chance of precipitation is 40%.

    Low: 69 °F

    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 7am. Cloudy, then gradually becoming mostly sunny, with a high near 77. North northeast wind 7 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

    High: 77 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60. North northeast wind 10 to 14 mph, with gusts as high as 20 mph.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 78. Northeast wind 10 to 14 mph, with gusts as high as 18 mph.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57. Northeast wind 7 to 10 mph, with gusts as high as 16 mph.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 78. East northeast wind 7 to 9 mph.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58. East northeast wind around 7 mph.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. North wind around 6 mph. Chance of precipitation is 40%.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 7am. Cloudy, then gradually becoming mostly sunny, with a high near 77. North northeast wind 7 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Thursday Night
Partly cloudy, with a low around 60. North northeast wind 10 to 14 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 78. Northeast wind 10 to 14 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 57. Northeast wind 7 to 10 mph, with gusts as high as 16 mph.
Saturday
Sunny, with a high near 78. East northeast wind 7 to 9 mph.
Saturday Night
Partly cloudy, with a low around 58. East northeast wind around 7 mph.
Sunday
Sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 61.
Monday
Partly sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
A chance of showers. Mostly sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 66.
Wednesday
Mostly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Macon IL
 39.71°N 89.01°W (Elev. 699 ft)
Last Update:
9:41 pm CDT Jul 30, 2025
Forecast Valid:
10pm CDT Jul 30, 2025-6pm CDT Aug 6, 2025
 
Forecast Discussion
 
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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