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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

42°F

6°C

Humidity 82%
Wind Speed NW 14 G 20 mph
Barometer 29.51 in (999.5 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 10 Dec 4:54 am CST
Extended Forecast for

Decatur Airport IL

Wind Advisory December 10, 05:17am until December 10, 12:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory December 10, 05:17am until December 10, 12:00pm

    NOW until 12:00pm Wed

    Wind Advisory

  • Overnight

    Low: 36 °F

    Slight Chance
    Showers and
    Breezy

  • Wednesday

    Wednesday: A chance of rain and snow showers before 11am, then a chance of snow showers between 11am and 2pm. Cloudy, with a temperature falling to around 30 by 5pm. Breezy, with a northwest wind 16 to 24 mph, with gusts as high as 46 mph. Chance of precipitation is 40%.

    High: 38 °F⇓

    Breezy.
    Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

  • Wednesday Night

    Wednesday Night: Cloudy, with a low around 21. Northwest wind 8 to 14 mph, with gusts as high as 20 mph.

    Low: 21 °F

    Cloudy

  • Thursday

    Thursday: A 30 percent chance of snow after 3pm. Mostly cloudy, with a high near 29. Northwest wind 7 to 9 mph becoming south in the afternoon.

    High: 29 °F

    Partly Sunny
    then Chance
    Snow

  • Thursday Night

    Thursday Night: Snow, mainly before midnight. Low around 24. South southeast wind 7 to 9 mph becoming east after midnight. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 24 °F

    Snow then
    Chance Snow

  • Friday

    Friday: Mostly cloudy, with a high near 32. East northeast wind 9 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 32 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 10. West northwest wind 9 to 11 mph, with gusts as high as 17 mph.

    Low: 10 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of snow. Mostly cloudy, with a high near 18.

    High: 18 °F

    Chance Snow

Detailed Forecast

Overnight
A 20 percent chance of showers. Cloudy, with a low around 36. Breezy, with a west wind around 21 mph, with gusts as high as 33 mph.
Wednesday
A chance of rain and snow showers before 11am, then a chance of snow showers between 11am and 2pm. Cloudy, with a temperature falling to around 30 by 5pm. Breezy, with a northwest wind 16 to 24 mph, with gusts as high as 46 mph. Chance of precipitation is 40%.
Wednesday Night
Cloudy, with a low around 21. Northwest wind 8 to 14 mph, with gusts as high as 20 mph.
Thursday
A 30 percent chance of snow after 3pm. Mostly cloudy, with a high near 29. Northwest wind 7 to 9 mph becoming south in the afternoon.
Thursday Night
Snow, mainly before midnight. Low around 24. South southeast wind 7 to 9 mph becoming east after midnight. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Friday
Mostly cloudy, with a high near 32. East northeast wind 9 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.
Friday Night
Mostly cloudy, with a low around 10. West northwest wind 9 to 11 mph, with gusts as high as 17 mph.
Saturday
A 40 percent chance of snow. Mostly cloudy, with a high near 18.
Saturday Night
Partly cloudy, with a low around -3.
Sunday
Sunny and cold, with a high near 10.
Sunday Night
Mostly clear, with a low around 0.
Monday
Mostly sunny, with a high near 28.
Monday Night
Mostly cloudy, with a low around 19.
Tuesday
Partly sunny, with a high near 38.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Decatur Airport IL
 39.84°N 88.88°W (Elev. 650 ft)
Last Update:
3:46 am CST Dec 10, 2025
Forecast Valid:
5am CST Dec 10, 2025-6pm CST Dec 16, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation