Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

22°F

-6°C

Humidity 89%
Wind Speed SW 16 G 24 mph
Barometer 30.09 in (1020.0 mb)
Dewpoint 19°F (-7°C)
Visibility 9.00 mi
Wind Chill8°F (-13°C)
Last update 3 Dec 12:54 am CST
Extended Forecast for

3 Miles WSW Forsyth IL

  • Overnight

    Overnight: Patchy fog.  Otherwise, mostly cloudy, with a low around 20. South wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 20 °F

    Patchy Fog

  • Wednesday

    Wednesday: A 30 percent chance of snow, mainly after 5pm.  Patchy fog before 9am.  Otherwise, mostly cloudy, with a high near 33. South southwest wind 8 to 13 mph becoming west in the afternoon. Winds could gust as high as 22 mph.

    High: 33 °F

    Patchy Fog
    then Chance
    Snow

  • Wednesday Night

    Wednesday Night: Cloudy, then gradually becoming partly cloudy, with a low around 3. Wind chill values between -4 and 1. North wind 9 to 14 mph, with gusts as high as 22 mph.

    Low: 3 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 16. Wind chill values between -1 and -11. North wind 5 to 10 mph becoming light and variable  in the afternoon. Winds could gust as high as 15 mph.

    High: 16 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around -1. Calm wind becoming south 5 to 7 mph after midnight.

    Low: -1 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 29. South southwest wind 7 to 10 mph.

    High: 29 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 16. South southwest wind 6 to 8 mph becoming west after midnight.

    Low: 16 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 29.

    High: 29 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 20. South wind 9 to 11 mph, with gusts as high as 21 mph.
Wednesday
A 30 percent chance of snow, mainly after 5pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 33. South southwest wind 8 to 13 mph becoming west in the afternoon. Winds could gust as high as 22 mph.
Wednesday Night
Cloudy, then gradually becoming partly cloudy, with a low around 3. Wind chill values between -4 and 1. North wind 9 to 14 mph, with gusts as high as 22 mph.
Thursday
Sunny, with a high near 16. Wind chill values between -1 and -11. North wind 5 to 10 mph becoming light and variable in the afternoon. Winds could gust as high as 15 mph.
Thursday Night
Mostly clear, with a low around -1. Calm wind becoming south 5 to 7 mph after midnight.
Friday
Mostly sunny, with a high near 29. South southwest wind 7 to 10 mph.
Friday Night
Mostly cloudy, with a low around 16. South southwest wind 6 to 8 mph becoming west after midnight.
Saturday
Partly sunny, with a high near 29.
Saturday Night
Mostly cloudy, with a low around 19.
Sunday
A 30 percent chance of snow after noon. Mostly cloudy, with a high near 29.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
Partly sunny, with a high near 28.
Monday Night
Mostly cloudy, with a low around 20.
Tuesday
Partly sunny, with a high near 34.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Forsyth IL
 39.89°N 89.02°W (Elev. 656 ft)
12:55 am CST Dec 3, 2025
1am CST Dec 3, 2025-6pm CST Dec 9, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database