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.

Partly Cloudy

75°F

24°C

Humidity 62%
Wind Speed S 14 G 24 mph
Barometer 29.94 in (1013.5 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 3 Apr 6:54 pm CDT
Extended Forecast for

Macon IL

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 57. South wind 11 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 57 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 1pm, then a slight chance of showers between 1pm and 4pm. Temperature falling to around 53 by 5pm. Breezy, with a west wind 14 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 61 °F⇓

    Showers then
    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 36. West northwest wind 14 to 18 mph, with gusts as high as 25 mph.

    Low: 36 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 52. West northwest wind 14 to 16 mph, with gusts as high as 23 mph.

    High: 52 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. West wind 8 to 10 mph, with gusts as high as 15 mph.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 55. Northwest wind 10 to 16 mph, with gusts as high as 21 mph.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30. Northwest wind 11 to 13 mph becoming north northeast after midnight. Winds could gust as high as 18 mph.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 57. South wind 11 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers and possibly a thunderstorm before 1pm, then a slight chance of showers between 1pm and 4pm. Temperature falling to around 53 by 5pm. Breezy, with a west wind 14 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 36. West northwest wind 14 to 18 mph, with gusts as high as 25 mph.
Sunday
Mostly sunny, with a high near 52. West northwest wind 14 to 16 mph, with gusts as high as 23 mph.
Sunday Night
Mostly clear, with a low around 38. West wind 8 to 10 mph, with gusts as high as 15 mph.
Monday
Sunny, with a high near 55. Northwest wind 10 to 16 mph, with gusts as high as 21 mph.
Monday Night
Partly cloudy, with a low around 30. Northwest wind 11 to 13 mph becoming north northeast after midnight. Winds could gust as high as 18 mph.
Tuesday
Mostly sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Partly sunny, with a high near 67. Breezy.
Wednesday Night
Partly cloudy, with a low around 51.
Thursday
Mostly sunny, with a high near 71. Breezy.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 53.
Friday
A chance of showers. Partly sunny, with a high near 72.
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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:
6:36 pm CDT Apr 3, 2026
Forecast Valid:
6pm CDT Apr 3, 2026-6pm CDT Apr 10, 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