Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Light Snow Fog/Mist and Breezy

21°F

-6°C

Humidity 85%
Wind Speed W 24 G 36 mph
Barometer 29.78 in (1009.0 mb)
Dewpoint 17°F (-8°C)
Visibility 1.25 mi
Wind Chill4°F (-16°C)
Last update 16 Mar 8:54 am CDT
Extended Forecast for

4 Miles N Forsyth IL

Wind Advisory March 16, 09:40am until March 16, 12:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory March 16, 09:40am until March 16, 12:00pm

    NOW until 12:00pm Mon

    Wind Advisory

  • Today

    High: 24 °F

    Chance Snow
    and Patchy
    Blowing Snow

  • Tonight

    Tonight: Mostly cloudy, with a low around 10. Wind chill values between -7 and 3. Blustery, with a west northwest wind 17 to 22 mph, with gusts as high as 32 mph.

    Low: 10 °F

    Mostly Cloudy
    and Blustery

  • Tuesday

    Tuesday: Partly sunny, with a high near 28. Wind chill values between -7 and 3. West northwest wind 9 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 21 mph.

    High: 28 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Snow likely.  Mostly cloudy, with a low around 23. South southeast wind 7 to 17 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Snow Likely

  • Wednesday

    Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 52. South wind 11 to 17 mph becoming west southwest in the afternoon. Winds could gust as high as 24 mph.

    High: 52 °F

    Gradual
    Clearing

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 34. West wind 6 to 8 mph becoming south after midnight.

    Low: 34 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 63. South southwest wind 8 to 10 mph becoming west northwest in the afternoon.

    High: 63 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Today
A 40 percent chance of snow, mainly before 3pm. Patchy blowing snow before 4pm. Cloudy, with a high near 24. Wind chill values between 4 and 9. Windy, with a west northwest wind 26 to 31 mph, with gusts as high as 40 mph.
Tonight
Mostly cloudy, with a low around 10. Wind chill values between -7 and 3. Blustery, with a west northwest wind 17 to 22 mph, with gusts as high as 32 mph.
Tuesday
Partly sunny, with a high near 28. Wind chill values between -7 and 3. West northwest wind 9 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 21 mph.
Tuesday Night
Snow likely. Mostly cloudy, with a low around 23. South southeast wind 7 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday
Cloudy through mid morning, then gradual clearing, with a high near 52. South wind 11 to 17 mph becoming west southwest in the afternoon. Winds could gust as high as 24 mph.
Wednesday Night
Partly cloudy, with a low around 34. West wind 6 to 8 mph becoming south after midnight.
Thursday
Mostly sunny, with a high near 63. South southwest wind 8 to 10 mph becoming west northwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 38.
Friday
Mostly sunny, with a high near 68.
Friday Night
Mostly cloudy, with a low around 48.
Saturday
Mostly sunny, with a high near 70.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Mostly sunny, with a high near 64.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Forsyth IL
 39.97°N 88.96°W (Elev. 679 ft)
8:02 am CDT Mar 16, 2026
9am CDT Mar 16, 2026-6pm CDT Mar 22, 2026
 
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