Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

11°F

-12°C

Humidity 77%
Wind Speed NW 15 G 22 mph
Barometer 30.18 in (1023.5 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill-5°F (-21°C)
Last update 25 Jan 7:54 pm CST
Extended Forecast for

2 Miles S Macon IL

Extreme Cold Warning January 26, 12:00am until January 26, 12:00pm
Click here for hazard details and duration
Extreme Cold Warning
  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around -7. Wind chill values between -15 and -25. Northwest wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: -7 °F

    Decreasing
    Clouds

  • Monday

    Monday: Mostly sunny and cold, with a high near 9. Wind chill values between -14 and -24. West northwest wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 9 °F

    Cold

  • Monday Night

    Monday Night: Mostly clear, with a temperature rising to around 10 by 5am. Wind chill values between -6 and -16. South southwest wind 8 to 15 mph, with gusts as high as 24 mph.

    Low: 3 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 21. Wind chill values between -5 and 5. West southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.

    High: 21 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around -6. Northwest wind 5 to 8 mph.

    Low: -6 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 18. West southwest wind 6 to 10 mph, with gusts as high as 15 mph.

    High: 18 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around -5. Northwest wind around 7 mph.

    Low: -5 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 12.

    High: 12 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -1.

    Low: -1 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around -7. Wind chill values between -15 and -25. Northwest wind 10 to 13 mph, with gusts as high as 21 mph.
Monday
Mostly sunny and cold, with a high near 9. Wind chill values between -14 and -24. West northwest wind 9 to 11 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a temperature rising to around 10 by 5am. Wind chill values between -6 and -16. South southwest wind 8 to 15 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 21. Wind chill values between -5 and 5. West southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.
Tuesday Night
Mostly clear, with a low around -6. Northwest wind 5 to 8 mph.
Wednesday
Increasing clouds, with a high near 18. West southwest wind 6 to 10 mph, with gusts as high as 15 mph.
Wednesday Night
Partly cloudy, with a low around -5. Northwest wind around 7 mph.
Thursday
Partly sunny, with a high near 12.
Thursday Night
Mostly cloudy, with a low around -1.
Friday
Mostly sunny, with a high near 13.
Friday Night
Mostly clear, with a low around -3.
Saturday
Mostly sunny, with a high near 16.
Saturday Night
Partly cloudy, with a low around 2.
Sunday
Partly sunny, with a high near 25.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Macon IL
 39.67°N 89.01°W (Elev. 643 ft)
8:37 pm CST Jan 25, 2026
8pm CST Jan 25, 2026-6pm CST Feb 1, 2026
 
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Additional Resources

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