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.

Fair

65°F

18°C

Humidity 54%
Wind Speed SE 9 mph
Barometer 29.91 in (1012.5 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 21 Mar 10:54 am CDT
Extended Forecast for

3 Miles WSW Forsyth IL

  • Today

    Today: Sunny, with a high near 81. South southeast wind 9 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 17 mph.

    High: 81 °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 80. Breezy, with a southwest wind 11 to 16 mph becoming north 17 to 22 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 80 °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 8 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 16 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 81. South southeast wind 9 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 80. Breezy, with a southwest wind 11 to 16 mph becoming north 17 to 22 mph in the afternoon. Winds could gust as high as 30 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 8 mph.
Tuesday
Partly sunny, with a high near 59. South wind 9 to 11 mph, with gusts as high as 16 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 39.
Friday
Partly sunny, with a high near 52.
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:
10:36 am CDT Mar 21, 2026
Forecast Valid:
11am CDT Mar 21, 2026-6pm CDT Mar 27, 2026
 
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