Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fog/Mist

42°F

6°C

Humidity 96%
Wind Speed NE 6 mph
Barometer 29.90 in (1012.5 mb)
Dewpoint 41°F (5°C)
Visibility 4.00 mi
Wind Chill38°F (3°C)
Last update 21 Mar 6:54 am CDT
Extended Forecast for

4 Miles N Forsyth IL

  • Today

    Today: Sunny, with a high near 83. East wind 6 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 17 mph.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. South southwest wind 8 to 13 mph, with gusts as high as 22 mph.

    Low: 60 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 79. Breezy, with a southwest wind 11 to 16 mph becoming north 18 to 23 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 79 °F

    Mostly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 33. Breezy, with a north wind 14 to 22 mph, with gusts as high as 32 mph.

    Low: 33 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 52. North northeast wind 10 to 13 mph, with gusts as high as 18 mph.

    High: 52 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 35. East wind around 9 mph.

    Low: 35 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 59. South wind 9 to 11 mph, with gusts as high as 17 mph.

    High: 59 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 65.

    High: 65 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny, with a high near 83. East wind 6 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 17 mph.
Tonight
Mostly clear, with a low around 60. South southwest wind 8 to 13 mph, with gusts as high as 22 mph.
Sunday
Partly sunny, with a high near 79. Breezy, with a southwest wind 11 to 16 mph becoming north 18 to 23 mph in the afternoon. Winds could gust as high as 31 mph.
Sunday Night
Partly cloudy, with a low around 33. Breezy, with a north wind 14 to 22 mph, with gusts as high as 32 mph.
Monday
Mostly sunny, with a high near 52. North northeast wind 10 to 13 mph, with gusts as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 35. East wind around 9 mph.
Tuesday
Partly sunny, with a high near 59. South wind 9 to 11 mph, with gusts as high as 17 mph.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
Mostly cloudy, with a high near 65.
Wednesday Night
Mostly cloudy, with a low around 51.
Thursday
A chance of rain. Partly sunny, with a high near 74.
Thursday Night
A chance of rain. Partly cloudy, with a low around 38.
Friday
Partly sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Forsyth IL
 39.97°N 88.96°W (Elev. 679 ft)
6:31 am CDT Mar 21, 2026
7am CDT Mar 21, 2026-6pm CDT Mar 27, 2026
 
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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