Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

55°F

13°C

Humidity 74%
Wind Speed NE 10 mph
Barometer 30.21 in (1022.8 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 21 May 7:54 am CDT
Extended Forecast for

3 Miles WSW Forsyth IL

  • Today

    Today: Mostly sunny, with a high near 68. East wind 10 to 15 mph, with gusts as high as 24 mph.

    High: 68 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 54. East northeast wind around 10 mph, with gusts as high as 21 mph.

    Low: 54 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 4pm.  Mostly cloudy, with a high near 67. East northeast wind 10 to 13 mph, with gusts as high as 22 mph.  Chance of precipitation is 40%.

    High: 67 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly before 1am.  Cloudy, with a low around 57. East wind 7 to 13 mph becoming west northwest after midnight. Winds could gust as high as 17 mph.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 57 °F

    Showers
    Likely

  • Saturday

    Saturday: Mostly cloudy, with a high near 77. West wind around 10 mph, with gusts as high as 15 mph.

    High: 77 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 58. South southwest wind 3 to 6 mph.

    Low: 58 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 50 percent chance of showers.  Mostly cloudy, with a high near 79. West southwest wind 5 to 7 mph.

    High: 79 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy

  • Memorial Day

    Memorial Day: Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 68. East wind 10 to 15 mph, with gusts as high as 24 mph.
Tonight
Mostly cloudy, with a low around 54. East northeast wind around 10 mph, with gusts as high as 21 mph.
Friday
A chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 67. East northeast wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Friday Night
Showers likely, mainly before 1am. Cloudy, with a low around 57. East wind 7 to 13 mph becoming west northwest after midnight. Winds could gust as high as 17 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Mostly cloudy, with a high near 77. West wind around 10 mph, with gusts as high as 15 mph.
Saturday Night
Mostly cloudy, with a low around 58. South southwest wind 3 to 6 mph.
Sunday
A 50 percent chance of showers. Mostly cloudy, with a high near 79. West southwest wind 5 to 7 mph.
Sunday Night
Mostly cloudy, with a low around 59.
Memorial Day
Partly sunny, with a high near 80.
Monday Night
Mostly cloudy, with a low around 62.
Tuesday
A chance of showers. Partly sunny, with a high near 82.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Forsyth IL
 39.89°N 89.02°W (Elev. 656 ft)
7:36 am CDT May 21, 2026
7am CDT May 21, 2026-6pm CDT May 27, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database