National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

36°F

2°C

Humidity 76%
Wind Speed W 10 mph
Barometer 29.94 in (1014.5 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 31 Dec 12:54 pm CST
Extended Forecast for

2 Miles NNE Decatur Airport IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 38. West wind 11 to 15 mph, with gusts as high as 23 mph.

    High: 38 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 20. West wind 9 to 11 mph becoming north after midnight. Winds could gust as high as 18 mph.

    Low: 20 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 30. North northeast wind 5 to 9 mph becoming calm in the afternoon.

    High: 30 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 19. Calm wind.

    Low: 19 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 34. Calm wind becoming east northeast around 6 mph in the morning.

    High: 34 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 22. Northeast wind around 6 mph.

    Low: 22 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 35. Northeast wind around 6 mph becoming north northwest in the afternoon.

    High: 35 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 20.

    Low: 20 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 38. West wind 11 to 15 mph, with gusts as high as 23 mph.
Tonight
Mostly cloudy, with a low around 20. West wind 9 to 11 mph becoming north after midnight. Winds could gust as high as 18 mph.
New Year's Day
Mostly sunny, with a high near 30. North northeast wind 5 to 9 mph becoming calm in the afternoon.
Thursday Night
Partly cloudy, with a low around 19. Calm wind.
Friday
Partly sunny, with a high near 34. Calm wind becoming east northeast around 6 mph in the morning.
Friday Night
Mostly cloudy, with a low around 22. Northeast wind around 6 mph.
Saturday
Partly sunny, with a high near 35. Northeast wind around 6 mph becoming north northwest in the afternoon.
Saturday Night
Mostly clear, with a low around 20.
Sunday
Mostly sunny, with a high near 36.
Sunday Night
Mostly cloudy, with a low around 29.
Monday
Mostly sunny, with a high near 50.
Monday Night
Partly cloudy, with a low around 34.
Tuesday
Partly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Decatur Airport IL
 39.86°N 88.85°W (Elev. 682 ft)
Last Update:
12:52 pm CST Dec 31, 2025
Forecast Valid:
1pm CST Dec 31, 2025-6pm CST Jan 6, 2026
 
Forecast Discussion
 
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Additional Resources

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