National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair and Breezy

38°F

3°C

Humidity 43%
Wind Speed S 25 G 33 mph
Barometer 29.71 in (1006.9 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 24 Feb 12:54 pm CST
Extended Forecast for

Forsyth IL

  • This Afternoon

    This Afternoon: Cloudy, with a high near 45. Breezy, with a south southwest wind 16 to 24 mph, with gusts as high as 36 mph.

    High: 45 °F

    Cloudy and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. South southwest wind 8 to 15 mph becoming west northwest after midnight. Winds could gust as high as 24 mph.

    Low: 27 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 45. West northwest wind 7 to 11 mph, with gusts as high as 16 mph.

    High: 45 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain before 7pm, then a chance of snow. Mostly cloudy, with a low around 26. Northwest wind 6 to 8 mph becoming east after midnight. Chance of precipitation is 50%.

    Low: 26 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Thursday

    Thursday: Mostly sunny, with a high near 47. East wind 7 to 9 mph becoming west southwest in the afternoon.

    High: 47 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. South southwest wind around 7 mph.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 60. South southwest wind 8 to 18 mph, with gusts as high as 26 mph.

    High: 60 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Cloudy, with a high near 45. Breezy, with a south southwest wind 16 to 24 mph, with gusts as high as 36 mph.
Tonight
Mostly cloudy, with a low around 27. South southwest wind 8 to 15 mph becoming west northwest after midnight. Winds could gust as high as 24 mph.
Wednesday
Mostly sunny, with a high near 45. West northwest wind 7 to 11 mph, with gusts as high as 16 mph.
Wednesday Night
A chance of rain before 7pm, then a chance of snow. Mostly cloudy, with a low around 26. Northwest wind 6 to 8 mph becoming east after midnight. Chance of precipitation is 50%.
Thursday
Mostly sunny, with a high near 47. East wind 7 to 9 mph becoming west southwest in the afternoon.
Thursday Night
Mostly clear, with a low around 29. South southwest wind around 7 mph.
Friday
Sunny, with a high near 60. South southwest wind 8 to 18 mph, with gusts as high as 26 mph.
Friday Night
Mostly clear, with a low around 34.
Saturday
Mostly sunny, with a high near 56.
Saturday Night
Partly cloudy, with a low around 25.
Sunday
A chance of rain and snow. Partly sunny, with a high near 40.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 25.
Monday
A chance of rain and snow. Partly sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Forsyth IL
 39.93°N 88.96°W (Elev. 650 ft)
Last Update:
12:26 pm CST Feb 24, 2026
Forecast Valid:
1pm CST Feb 24, 2026-6pm CST Mar 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation