Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

64°F

18°C

Humidity 65%
Wind Speed E 17 mph
Barometer 30.00 in (1015.6 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 22 May 11:54 am CDT
Extended Forecast for

3 Miles WSW Forsyth IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 69. East wind around 11 mph, with gusts as high as 18 mph.

    High: 69 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 20 percent chance of showers before midnight.  Mostly cloudy, with a low around 59. East wind 5 to 10 mph, with gusts as high as 16 mph.

    Low: 59 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 78. West wind 5 to 7 mph.

    High: 78 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 50 percent chance of showers after 1am.  Mostly cloudy, with a low around 59. West wind around 5 mph becoming light and variable  in the evening.

    Low: 59 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A 50 percent chance of showers.  Mostly cloudy, with a high near 79. South wind around 6 mph becoming northeast in the afternoon.

    High: 79 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58. Light east wind.

    Low: 58 °F

    Partly Cloudy

  • Memorial Day

    Memorial Day: Partly sunny, with a high near 81. East wind 5 to 7 mph.

    High: 81 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 69. East wind around 11 mph, with gusts as high as 18 mph.
Tonight
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 59. East wind 5 to 10 mph, with gusts as high as 16 mph.
Saturday
Partly sunny, with a high near 78. West wind 5 to 7 mph.
Saturday Night
A 50 percent chance of showers after 1am. Mostly cloudy, with a low around 59. West wind around 5 mph becoming light and variable in the evening.
Sunday
A 50 percent chance of showers. Mostly cloudy, with a high near 79. South wind around 6 mph becoming northeast in the afternoon.
Sunday Night
Partly cloudy, with a low around 58. Light east wind.
Memorial Day
Partly sunny, with a high near 81. East wind 5 to 7 mph.
Monday Night
Mostly cloudy, with a low around 61.
Tuesday
Partly sunny, with a high near 83.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 64.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 81.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Forsyth IL
 39.89°N 89.02°W (Elev. 656 ft)
10:46 am CDT May 22, 2026
12pm CDT May 22, 2026-6pm CDT May 28, 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