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

35°F

2°C

Humidity 72%
Wind Speed S 8 mph
Barometer 30.02 in (1017.4 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 9 Feb 6:54 pm CST
Extended Forecast for

4 Miles N Forsyth IL

  • Tonight

    Tonight: Partly cloudy, with a low around 33. South wind 9 to 13 mph, with gusts as high as 21 mph.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 52. Southwest wind 9 to 14 mph becoming north northwest in the afternoon. Winds could gust as high as 22 mph.

    High: 52 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 25. North northwest wind around 10 mph, with gusts as high as 17 mph.

    Low: 25 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 44. North northwest wind 7 to 10 mph, with gusts as high as 15 mph.

    High: 44 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 27. Northwest wind around 6 mph becoming light and variable.

    Low: 27 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Cloudy, with a high near 42. East southeast wind 5 to 7 mph.

    High: 42 °F

    Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 27. East southeast wind around 7 mph.

    Low: 27 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 33. South wind 9 to 13 mph, with gusts as high as 21 mph.
Tuesday
Mostly sunny, with a high near 52. Southwest wind 9 to 14 mph becoming north northwest in the afternoon. Winds could gust as high as 22 mph.
Tuesday Night
Mostly clear, with a low around 25. North northwest wind around 10 mph, with gusts as high as 17 mph.
Wednesday
Sunny, with a high near 44. North northwest wind 7 to 10 mph, with gusts as high as 15 mph.
Wednesday Night
Increasing clouds, with a low around 27. Northwest wind around 6 mph becoming light and variable.
Thursday
Cloudy, with a high near 42. East southeast wind 5 to 7 mph.
Thursday Night
Mostly cloudy, with a low around 27. East southeast wind around 7 mph.
Friday
Mostly sunny, with a high near 43.
Friday Night
Mostly cloudy, with a low around 29.
Saturday
A 50 percent chance of rain after noon. Cloudy, with a high near 44.
Saturday Night
Rain likely. Mostly cloudy, with a low around 33.
Sunday
A chance of rain. Partly sunny, with a high near 47.
Sunday Night
Partly cloudy, with a low around 30.
Washington's Birthday
Mostly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Forsyth IL
 39.97°N 88.96°W (Elev. 679 ft)
Last Update:
6:36 pm CST Feb 9, 2026
Forecast Valid:
7pm CST Feb 9, 2026-6pm CST Feb 16, 2026
 
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Additional Resources

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Chance of Precipitation