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

36°F

2°C

Humidity 93%
Wind Speed W 7 mph
Barometer 30.02 in (1017.1 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 8 Mar 5:54 am CDT
Extended Forecast for

4 Miles N Forsyth IL

  • Today

    Today: Sunny, with a high near 62. Southwest wind 9 to 17 mph, with gusts as high as 26 mph.

    High: 62 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 44. South southwest wind around 14 mph, with gusts as high as 23 mph.

    Low: 44 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 72. Breezy, with a south southwest wind 14 to 21 mph, with gusts as high as 30 mph.

    High: 72 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 58. South wind around 15 mph, with gusts as high as 23 mph.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Showers and thunderstorms likely after 1pm. Increasing clouds, with a high near 78. Breezy, with a south southwest wind 13 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Mostly Sunny
    then T-storms
    Likely and
    Breezy

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 49. Breezy, with a south southwest wind 18 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 49 °F

    T-storms and
    Breezy

  • Wednesday

    Wednesday: Showers. High near 63. Breezy, with a southwest wind 22 to 25 mph becoming northwest in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 63 °F

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 28. Blustery.

    Low: 28 °F

    Partly Cloudy
    and Blustery

  • Thursday

    Thursday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 62. Southwest wind 9 to 17 mph, with gusts as high as 26 mph.
Tonight
Clear, with a low around 44. South southwest wind around 14 mph, with gusts as high as 23 mph.
Monday
Sunny, with a high near 72. Breezy, with a south southwest wind 14 to 21 mph, with gusts as high as 30 mph.
Monday Night
Mostly clear, with a low around 58. South wind around 15 mph, with gusts as high as 23 mph.
Tuesday
Showers and thunderstorms likely after 1pm. Increasing clouds, with a high near 78. Breezy, with a south southwest wind 13 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and possibly a thunderstorm. Low around 49. Breezy, with a south southwest wind 18 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Wednesday
Showers. High near 63. Breezy, with a southwest wind 22 to 25 mph becoming northwest in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday Night
Partly cloudy, with a low around 28. Blustery.
Thursday
Mostly sunny, with a high near 47.
Thursday Night
Mostly cloudy, with a low around 40. Breezy.
Friday
Partly sunny, with a high near 59. Breezy.
Friday Night
Mostly cloudy, with a low around 33.
Saturday
Cloudy, with a high near 49.
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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:
5:06 am CDT Mar 8, 2026
Forecast Valid:
6am CDT Mar 8, 2026-6pm CDT Mar 14, 2026
 
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Additional Resources

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Chance of Precipitation