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

31°F

-1°C

Humidity 85%
Wind Speed Calm
Barometer 29.92 in (1013.4 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 27 Feb 2:54 am CST
Extended Forecast for

3 Miles WSW Forsyth IL

  • Overnight

    Overnight: Clear, with a low around 32. Calm wind.

    Low: 32 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 67. Breezy, with a light south southwest wind becoming southwest 15 to 20 mph in the morning. Winds could gust as high as 32 mph.

    High: 67 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 34. Southwest wind 7 to 10 mph becoming northeast after midnight. Winds could gust as high as 22 mph.

    Low: 34 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 54. East wind 5 to 13 mph, with gusts as high as 17 mph.

    High: 54 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 25. North northeast wind 14 to 16 mph, with gusts as high as 23 mph.

    Low: 25 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 41. East northeast wind around 14 mph, with gusts as high as 22 mph.

    High: 41 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Snow. Low around 25. East northeast wind 11 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    Low: 25 °F

    Snow

  • Monday

    Monday: Mostly cloudy, with a high near 39.

    High: 39 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 29.

    Low: 29 °F

    Chance Rain

Detailed Forecast

Overnight
Clear, with a low around 32. Calm wind.
Friday
Sunny, with a high near 67. Breezy, with a light south southwest wind becoming southwest 15 to 20 mph in the morning. Winds could gust as high as 32 mph.
Friday Night
Mostly clear, with a low around 34. Southwest wind 7 to 10 mph becoming northeast after midnight. Winds could gust as high as 22 mph.
Saturday
Partly sunny, with a high near 54. East wind 5 to 13 mph, with gusts as high as 17 mph.
Saturday Night
Partly cloudy, with a low around 25. North northeast wind 14 to 16 mph, with gusts as high as 23 mph.
Sunday
Mostly cloudy, with a high near 41. East northeast wind around 14 mph, with gusts as high as 22 mph.
Sunday Night
Snow. Low around 25. East northeast wind 11 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Monday
Mostly cloudy, with a high near 39.
Monday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 29.
Tuesday
Rain likely. Cloudy, with a high near 45. Chance of precipitation is 70%.
Tuesday Night
Rain likely. Cloudy, with a low around 35.
Wednesday
A chance of rain. Cloudy, with a high near 56.
Wednesday Night
Rain likely. Cloudy, with a low around 47.
Thursday
Rain likely. Mostly cloudy, with a high near 62.
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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:
2:41 am CST Feb 27, 2026
Forecast Valid:
3am CST Feb 27, 2026-6pm CST Mar 5, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation