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

37°F

3°C

Humidity 86%
Wind Speed SW 3 mph
Barometer 30.07 in (1018.5 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 19 Mar 7:54 am CDT
Extended Forecast for

4 Miles N Forsyth IL

  • Today

    Today: Sunny, with a high near 70. South southeast wind 5 to 7 mph.

    High: 70 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 47. South southwest wind 6 to 9 mph, with gusts as high as 16 mph.

    Low: 47 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 76. Southwest wind 9 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 22 mph.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 45. Northwest wind 6 to 9 mph becoming northeast after midnight.

    Low: 45 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 74. East northeast wind 6 to 9 mph becoming southwest in the afternoon.

    High: 74 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 55. South wind 8 to 14 mph, with gusts as high as 21 mph.

    Low: 55 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 78. Breezy, with a south southwest wind 14 to 22 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph.

    High: 78 °F

    Mostly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 35. Breezy.

    Low: 35 °F

    Partly Cloudy
    and Breezy

  • Monday

    Monday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 70. South southeast wind 5 to 7 mph.
Tonight
Partly cloudy, with a low around 47. South southwest wind 6 to 9 mph, with gusts as high as 16 mph.
Friday
Mostly sunny, with a high near 76. Southwest wind 9 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 22 mph.
Friday Night
Mostly cloudy, with a low around 45. Northwest wind 6 to 9 mph becoming northeast after midnight.
Saturday
Sunny, with a high near 74. East northeast wind 6 to 9 mph becoming southwest in the afternoon.
Saturday Night
Mostly clear, with a low around 55. South wind 8 to 14 mph, with gusts as high as 21 mph.
Sunday
Mostly sunny, with a high near 78. Breezy, with a south southwest wind 14 to 22 mph becoming west northwest in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
Partly cloudy, with a low around 35. Breezy.
Monday
Sunny, with a high near 50.
Monday Night
Partly cloudy, with a low around 32.
Tuesday
Mostly cloudy, with a high near 55.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Mostly sunny, with a high near 65.
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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:
7:11 am CDT Mar 19, 2026
Forecast Valid:
8am CDT Mar 19, 2026-6pm CDT Mar 25, 2026
 
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Additional Resources

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