Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Mostly Cloudy

26°F

-3°C

Humidity 66%
Wind Speed S 15 mph
Barometer 29.88 in (1012.7 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 5 Dec 6:54 pm CST
Extended Forecast for

2 Miles WNW Decatur IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 23. South wind 7 to 9 mph becoming west after midnight. Winds could gust as high as 15 mph.

    Low: 23 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 32. West northwest wind 5 to 7 mph becoming light and variable  in the afternoon.

    High: 32 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Snow likely, mainly after midnight.  Mostly cloudy, with a low around 27. Southeast wind 3 to 8 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Slight Chance
    Snow then
    Snow Likely

  • Sunday

    Sunday: Rain and snow likely before noon.  Mostly cloudy, with a high near 33. South southeast wind 8 to 13 mph becoming north in the afternoon. Winds could gust as high as 18 mph.  Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 33 °F

    Rain/Snow
    Likely then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 10. North wind 6 to 11 mph, with gusts as high as 16 mph.

    Low: 10 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 24. North northeast wind around 6 mph becoming south southeast in the afternoon.

    High: 24 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 16. South wind 5 to 14 mph, with gusts as high as 21 mph.

    Low: 16 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain after midnight.  Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 23. South wind 7 to 9 mph becoming west after midnight. Winds could gust as high as 15 mph.
Saturday
Mostly cloudy, with a high near 32. West northwest wind 5 to 7 mph becoming light and variable in the afternoon.
Saturday Night
Snow likely, mainly after midnight. Mostly cloudy, with a low around 27. Southeast wind 3 to 8 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday
Rain and snow likely before noon. Mostly cloudy, with a high near 33. South southeast wind 8 to 13 mph becoming north in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday Night
Mostly cloudy, with a low around 10. North wind 6 to 11 mph, with gusts as high as 16 mph.
Monday
Mostly sunny, with a high near 24. North northeast wind around 6 mph becoming south southeast in the afternoon.
Monday Night
Partly cloudy, with a low around 16. South wind 5 to 14 mph, with gusts as high as 21 mph.
Tuesday
Partly sunny, with a high near 38.
Tuesday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 32.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 21.
Thursday
Mostly cloudy, with a high near 33.
Thursday Night
Mostly cloudy, with a low around 15.
Friday
Partly sunny, with a high near 23.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Decatur IL
 39.86°N 88.97°W (Elev. 676 ft)
6:36 pm CST Dec 5, 2025
7pm CST Dec 5, 2025-6pm CST Dec 12, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database