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

54°F

12°C

Humidity 49%
Wind Speed W 14 G 25 mph
Barometer 29.99 in (1015.8 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 18 Mar 2:54 pm CDT
Extended Forecast for

4 Miles N Forsyth IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 54. West southwest wind around 10 mph, with gusts as high as 16 mph.

    High: 54 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 38. West wind around 6 mph becoming light and variable.

    Low: 38 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 66. South southeast wind around 7 mph becoming north northeast in the afternoon.

    High: 66 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 45. Northeast wind around 6 mph becoming south after midnight.

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 74. Southwest wind 7 to 15 mph, with gusts as high as 20 mph.

    High: 74 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 46. West wind 6 to 9 mph becoming north after midnight.

    Low: 46 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 74. North northwest wind 6 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 15 mph.

    High: 74 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 72. Breezy.

    High: 72 °F

    Partly Sunny
    and Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 54. West southwest wind around 10 mph, with gusts as high as 16 mph.
Tonight
Increasing clouds, with a low around 38. West wind around 6 mph becoming light and variable.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 66. South southeast wind around 7 mph becoming north northeast in the afternoon.
Thursday Night
Partly cloudy, with a low around 45. Northeast wind around 6 mph becoming south after midnight.
Friday
Mostly sunny, with a high near 74. Southwest wind 7 to 15 mph, with gusts as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 46. West wind 6 to 9 mph becoming north after midnight.
Saturday
Mostly sunny, with a high near 74. North northwest wind 6 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 15 mph.
Saturday Night
Mostly clear, with a low around 53.
Sunday
Partly sunny, with a high near 72. Breezy.
Sunday Night
Mostly cloudy, with a low around 33. Breezy.
Monday
Partly sunny, with a high near 49.
Monday Night
Mostly cloudy, with a low around 31.
Tuesday
Partly sunny, with a high near 55.
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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:
1:26 pm CDT Mar 18, 2026
Forecast Valid:
3pm CDT Mar 18, 2026-6pm CDT Mar 24, 2026
 
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Additional Resources

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