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

21°F

-6°C

Humidity 81%
Wind Speed W 14 mph
Barometer 30.10 in (1020.3 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill8°F (-13°C)
Last update 2 Dec 11:54 am CST
Extended Forecast for

3 Miles WSW Forsyth IL

  • This Afternoon

    This Afternoon: Cloudy, with a high near 24. West wind 6 to 8 mph.

    High: 24 °F

    Cloudy

  • Tonight

    Tonight: Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 16. Wind chill values between 4 and 14. South wind 6 to 11 mph, with gusts as high as 22 mph.

    Low: 16 °F

    Patchy Fog

  • Wednesday

    Wednesday: Isolated snow showers after 3pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 34. South southwest wind 10 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 17 mph. Chance of precipitation is 20%.

    High: 34 °F

    Patchy Fog
    then Isolated
    Snow Showers

  • Wednesday Night

    Wednesday Night: Scattered snow showers before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 3. Wind chill values between -10 and zero. North northwest wind 10 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.

    Low: 3 °F

    Scattered
    Snow Showers
    then Mostly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 14. North northwest wind 5 to 10 mph becoming light northeast in the afternoon. Winds could gust as high as 15 mph.

    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. South wind 7 to 10 mph.

    High: 28 °F

    Mostly Sunny

  • Friday Night

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

    Low: 16 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 29.

    High: 29 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Cloudy, with a high near 24. West wind 6 to 8 mph.
Tonight
Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 16. Wind chill values between 4 and 14. South wind 6 to 11 mph, with gusts as high as 22 mph.
Wednesday
Isolated snow showers after 3pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 34. South southwest wind 10 to 13 mph becoming west northwest in the afternoon. Winds could gust as high as 17 mph. Chance of precipitation is 20%.
Wednesday Night
Scattered snow showers before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 3. Wind chill values between -10 and zero. North northwest wind 10 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
Thursday
Sunny, with a high near 14. North northwest wind 5 to 10 mph becoming light northeast in the afternoon. Winds could gust as high as 15 mph.
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. South wind 7 to 10 mph.
Friday Night
Mostly cloudy, with a low around 16.
Saturday
Mostly cloudy, with a high near 29.
Saturday Night
Mostly cloudy, with a low around 18.
Sunday
Mostly cloudy, with a high near 27.
Sunday Night
Mostly cloudy, with a low around 9.
Monday
Partly sunny, with a high near 29.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Forsyth IL
 39.89°N 89.02°W (Elev. 656 ft)
Last Update:
11:16 am CST Dec 2, 2025
Forecast Valid:
12pm CST Dec 2, 2025-6pm CST Dec 8, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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