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.

A Few Clouds

33°F

1°C

Humidity 36%
Wind Speed W 9 mph
Barometer 30.26 in (1025.5 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 22 Jan 3:54 pm CST
Extended Forecast for

Macon IL

Winter Storm Watch January 24, 06:00am until January 25, 06:00pm
Cold Weather Advisory January 23, 03:00am until January 24, 12:00pm
Click here for hazard details and duration
Winter Storm Watch
Cold Weather Advisory

  • Tonight

    Tonight: Mostly cloudy, with a low around 0. Wind chill values between -4 and -14. West wind 7 to 17 mph becoming north northwest after midnight. Winds could gust as high as 26 mph.

    Low: 0 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny and cold, with a high near 6. Wind chill values between -11 and -21. North northwest wind 11 to 18 mph, with gusts as high as 28 mph.

    High: 6 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -1. Wind chill values between -12 and -17. Northeast wind around 11 mph, with gusts as high as 17 mph.

    Low: -1 °F

    Mostly Cloudy

  • Saturday

    Saturday: Snow, mainly after noon. High near 10. Wind chill values between -6 and -16. East northeast wind around 11 mph, with gusts as high as 17 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 10 °F

    Chance Snow
    then Snow

  • Saturday Night

    Saturday Night: Snow. Low around 7. East northeast wind 10 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    Low: 7 °F

    Snow

  • Sunday

    Sunday: Snow likely. Cloudy, with a high near 14. North northeast wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    High: 14 °F

    Snow Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around -2. Northwest wind 11 to 13 mph, with gusts as high as 18 mph.

    Low: -2 °F

    Chance Snow
    then Partly
    Cloudy

  • Monday

    Monday: Sunny, with a high near 11.

    High: 11 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 1.

    Low: 1 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 0. Wind chill values between -4 and -14. West wind 7 to 17 mph becoming north northwest after midnight. Winds could gust as high as 26 mph.
Friday
Partly sunny and cold, with a high near 6. Wind chill values between -11 and -21. North northwest wind 11 to 18 mph, with gusts as high as 28 mph.
Friday Night
Mostly cloudy, with a low around -1. Wind chill values between -12 and -17. Northeast wind around 11 mph, with gusts as high as 17 mph.
Saturday
Snow, mainly after noon. High near 10. Wind chill values between -6 and -16. East northeast wind around 11 mph, with gusts as high as 17 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Saturday Night
Snow. Low around 7. East northeast wind 10 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Sunday
Snow likely. Cloudy, with a high near 14. North northeast wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Sunday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around -2. Northwest wind 11 to 13 mph, with gusts as high as 18 mph.
Monday
Sunny, with a high near 11.
Monday Night
Mostly clear, with a low around 1.
Tuesday
Mostly sunny, with a high near 24.
Tuesday Night
Mostly cloudy, with a low around 8.
Wednesday
Partly sunny, with a high near 19.
Wednesday Night
Partly cloudy, with a low around 0.
Thursday
Mostly sunny, with a high near 12.
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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:
3:36 pm CST Jan 22, 2026
Forecast Valid:
4pm CST Jan 22, 2026-6pm CST Jan 29, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation