Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Overcast
65°F
18°C
| Humidity | 52% |
| Wind Speed | E 14 G 22 mph |
| Barometer | 30.11 in (1019.4 mb) |
| Dewpoint | 47°F (8°C) |
| Visibility | 10.00 mi |
| Last update | 21 May 6:54 pm CDT |
Extended Forecast for
3 Miles WSW Forsyth IL
Tonight

Low: 54 °F
Mostly Cloudy
Friday
High: 70 °F
Mostly Cloudy
then Chance
ShowersFriday Night

Low: 56 °F
Chance
ShowersSaturday

High: 76 °F
Mostly Cloudy
Saturday Night

Low: 58 °F
Mostly Cloudy
Sunday
High: 80 °F
Chance
Showers then
Chance
T-stormsSunday Night

Low: 59 °F
Mostly Cloudy
Memorial Day

High: 80 °F
Partly Sunny
Monday Night

Low: 61 °F
Mostly Cloudy
Detailed Forecast
Tonight
Mostly cloudy, with a low around 54. East wind around 11 mph, with gusts as high as 20 mph.
Friday
A 40 percent chance of showers, mainly after 2pm. Cloudy, with a high near 70. East northeast wind 11 to 14 mph, with gusts as high as 21 mph.
Friday Night
A 40 percent chance of showers. Cloudy, with a low around 56. East northeast wind 6 to 10 mph, with gusts as high as 16 mph.
Saturday
Mostly cloudy, with a high near 76. West northwest wind 5 to 8 mph.
Saturday Night
Mostly cloudy, with a low around 58. Northwest wind around 5 mph becoming calm in the evening.
Sunday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 80. Light and variable wind becoming west 5 to 7 mph in the morning. Chance of precipitation is 50%.
Sunday Night
Mostly cloudy, with a low around 59. Light east northeast wind.
Memorial Day
Partly sunny, with a high near 80.
Monday Night
Mostly cloudy, with a low around 61.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. Chance of precipitation is 40%.
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 82.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 83.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
3 Miles WSW Forsyth IL
39.89°N 89.02°W (Elev. 656 ft)
39.89°N 89.02°W (Elev. 656 ft)
7:36 pm CDT May 21, 2026
7pm CDT May 21, 2026-6pm CDT May 28, 2026


