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

46°F

8°C

Humidity 42%
Wind Speed NW 8 mph
Barometer 30.04 in (1017.3 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 13 Mar 8:54 pm CDT
Extended Forecast for

4 Miles N Forsyth IL

  • Tonight

    Tonight: A chance of flurries after 4am. Mostly cloudy, with a low around 32. West northwest wind 7 to 11 mph becoming north northeast after midnight. Winds could gust as high as 17 mph.

    Low: 32 °F

    Chance
    Flurries

  • Saturday

    Saturday: A 10 percent chance of snow before 7am. Mostly cloudy, with a high near 52. East southeast wind 8 to 16 mph, with gusts as high as 23 mph.

    High: 52 °F

    Slight Chance
    Snow then
    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 47. East southeast wind 14 to 18 mph, with gusts as high as 28 mph.

    Low: 47 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain before 10am, then showers, mainly after 1pm. High near 67. Windy, with a south wind 22 to 27 mph increasing to 28 to 33 mph in the afternoon. Winds could gust as high as 44 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 67 °F

    Windy. Chance
    Rain then
    Showers

  • Sunday Night

    Sunday Night: Rain showers before 1am, then snow likely. Low around 21. Windy, with a south southwest wind 24 to 30 mph becoming west northwest after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    Low: 21 °F

    Showers and
    Breezy then
    Rain/Snow and
    Windy

  • Monday

    Monday: A 50 percent chance of snow before 1pm. Cloudy, with a high near 25. Windy, with a west northwest wind around 31 mph, with gusts as high as 40 mph.

    High: 25 °F

    Chance Snow
    and Windy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 9. Blustery, with a west northwest wind 18 to 24 mph, with gusts as high as 32 mph.

    Low: 9 °F

    Mostly Cloudy
    and Blustery

  • Tuesday

    Tuesday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of snow before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 22. Chance of precipitation is 50%.

    Low: 22 °F

    Chance Snow
    then Chance
    Rain/Snow

Detailed Forecast

Tonight
A chance of flurries after 4am. Mostly cloudy, with a low around 32. West northwest wind 7 to 11 mph becoming north northeast after midnight. Winds could gust as high as 17 mph.
Saturday
A 10 percent chance of snow before 7am. Mostly cloudy, with a high near 52. East southeast wind 8 to 16 mph, with gusts as high as 23 mph.
Saturday Night
Mostly cloudy, with a low around 47. East southeast wind 14 to 18 mph, with gusts as high as 28 mph.
Sunday
A chance of rain before 10am, then showers, mainly after 1pm. High near 67. Windy, with a south wind 22 to 27 mph increasing to 28 to 33 mph in the afternoon. Winds could gust as high as 44 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain showers before 1am, then snow likely. Low around 21. Windy, with a south southwest wind 24 to 30 mph becoming west northwest after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Monday
A 50 percent chance of snow before 1pm. Cloudy, with a high near 25. Windy, with a west northwest wind around 31 mph, with gusts as high as 40 mph.
Monday Night
Mostly cloudy, with a low around 9. Blustery, with a west northwest wind 18 to 24 mph, with gusts as high as 32 mph.
Tuesday
Mostly sunny, with a high near 28.
Tuesday Night
A chance of snow before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 22. Chance of precipitation is 50%.
Wednesday
Mostly sunny, with a high near 52.
Wednesday Night
Mostly clear, with a low around 34.
Thursday
Mostly sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 40.
Friday
Mostly sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Forsyth IL
 39.97°N 88.96°W (Elev. 679 ft)
Last Update:
9:36 pm CDT Mar 13, 2026
Forecast Valid:
9pm CDT Mar 13, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation