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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

74°F

23°C

Humidity 82%
Wind Speed NW 3 mph
Barometer 30.04 in (1016.6 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 14 Oct 12:54 pm CDT
Extended Forecast for

Macon IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers before 2pm. Mostly cloudy, with a high near 76. North wind around 6 mph.

    High: 76 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers after 3am. Mostly cloudy, with a low around 60. East northeast wind 7 to 10 mph, with gusts as high as 16 mph.

    Low: 60 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Showers and thunderstorms before 3pm, then showers and possibly a thunderstorm, mainly after 3pm. High near 76. East wind 7 to 11 mph becoming south in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Showers

  • Thursday Night

    Thursday Night: Showers. Low around 47. Breezy, with a northwest wind 11 to 21 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.

    Low: 47 °F

    Showers and
    Breezy

  • Friday

    Friday: Partly sunny, with a high near 57. Breezy, with a northwest wind 22 to 24 mph, with gusts as high as 33 mph.

    High: 57 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 37. North wind 6 to 14 mph, with gusts as high as 20 mph.

    Low: 37 °F

    Mostly Clear

  • Saturday

    Saturday: Areas of frost before 8am. Otherwise, sunny, with a high near 59. Light and variable wind.

    High: 59 °F

    Areas Frost
    then Sunny

  • Saturday Night

    Saturday Night: Areas of frost after 5am. Otherwise, clear, with a low around 36.

    Low: 36 °F

    Clear then
    Areas Frost

  • Sunday

    Sunday: Areas of frost before 8am. Otherwise, sunny, with a high near 70.

    High: 70 °F

    Areas Frost
    then Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers before 2pm. Mostly cloudy, with a high near 76. North wind around 6 mph.
Tonight
A 20 percent chance of showers after 3am. Mostly cloudy, with a low around 60. East northeast wind 7 to 10 mph, with gusts as high as 16 mph.
Thursday
Showers and thunderstorms before 3pm, then showers and possibly a thunderstorm, mainly after 3pm. High near 76. East wind 7 to 11 mph becoming south in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers. Low around 47. Breezy, with a northwest wind 11 to 21 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.
Friday
Partly sunny, with a high near 57. Breezy, with a northwest wind 22 to 24 mph, with gusts as high as 33 mph.
Friday Night
Mostly clear, with a low around 37. North wind 6 to 14 mph, with gusts as high as 20 mph.
Saturday
Areas of frost before 8am. Otherwise, sunny, with a high near 59. Light and variable wind.
Saturday Night
Areas of frost after 5am. Otherwise, clear, with a low around 36.
Sunday
Areas of frost before 8am. Otherwise, sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Partly sunny, with a high near 72.
Monday Night
Mostly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 76.
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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:
12:36 pm CDT Oct 14, 2026
Forecast Valid:
1pm CDT Oct 14, 2026-6pm CDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation