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

22°F

-6°C

Humidity 89%
Wind Speed NW 9 mph
Barometer 30.02 in (1017.6 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill12°F (-11°C)
Last update 2 Dec 2:54 am CST
Extended Forecast for

Decatur Airport IL

  • Overnight

    Overnight: Cloudy, with a low around 15. Northwest wind around 8 mph.

    Low: 15 °F

    Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 23. Wind chill values between 5 and 15. Northwest wind around 7 mph becoming southwest in the afternoon.

    High: 23 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 16. Wind chill values between 4 and 12. South wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 16 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 34. South southwest wind 9 to 11 mph becoming west in the afternoon. Winds could gust as high as 16 mph.

    High: 34 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Cloudy, then gradually becoming partly cloudy, with a low around 6. North northwest wind 9 to 11 mph, with gusts as high as 17 mph.

    Low: 6 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 14. North northwest wind 5 to 10 mph becoming light north in the afternoon.

    High: 14 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 0. Calm wind becoming south 5 to 7 mph after midnight.

    Low: 0 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Cloudy, with a low around 15. Northwest wind around 8 mph.
Tuesday
Mostly cloudy, with a high near 23. Wind chill values between 5 and 15. Northwest wind around 7 mph becoming southwest in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 16. Wind chill values between 4 and 12. South wind 6 to 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly cloudy, with a high near 34. South southwest wind 9 to 11 mph becoming west in the afternoon. Winds could gust as high as 16 mph.
Wednesday Night
Cloudy, then gradually becoming partly cloudy, with a low around 6. North northwest wind 9 to 11 mph, with gusts as high as 17 mph.
Thursday
Sunny, with a high near 14. North northwest wind 5 to 10 mph becoming light north in the afternoon.
Thursday Night
Mostly clear, with a low around 0. Calm wind becoming south 5 to 7 mph after midnight.
Friday
Mostly sunny, with a high near 28.
Friday Night
Mostly cloudy, with a low around 16.
Saturday
Mostly cloudy, with a high near 30.
Saturday Night
Mostly cloudy, with a low around 18.
Sunday
Mostly cloudy, with a high near 29.
Sunday Night
Mostly cloudy, with a low around 10.
Monday
Partly sunny, with a high near 29.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Decatur Airport IL
 39.84°N 88.88°W (Elev. 650 ft)
Last Update:
3:16 am CST Dec 2, 2025
Forecast Valid:
3am CST Dec 2, 2025-6pm CST Dec 8, 2025
 
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Additional Resources

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