Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
59°F
15°C
| Humidity | 78% |
| Wind Speed | NA |
| Barometer | 30.05 in (1017.3 mb) |
| Dewpoint | 52°F (11°C) |
| Visibility | 9.00 mi |
| Last update | 26 May 2:54 am CDT |
Extended Forecast for
3 Miles WSW Forsyth IL
Overnight

Low: 60 °F
Mostly Cloudy
Tuesday

High: 82 °F
Mostly Cloudy
Tuesday Night
Low: 62 °F
Mostly Cloudy
then Slight
Chance
ShowersWednesday

High: 83 °F
Mostly Sunny
Wednesday Night

Low: 60 °F
Mostly Clear
Thursday

High: 82 °F
Mostly Sunny
Thursday Night

Low: 57 °F
Partly Cloudy
Friday

High: 79 °F
Partly Sunny
Friday Night

Low: 57 °F
Partly Cloudy
Detailed Forecast
Overnight
Mostly cloudy, with a steady temperature around 60. Calm wind.
Tuesday
Mostly cloudy, with a high near 82. East wind 3 to 7 mph.
Tuesday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 62. Northeast wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 83. North northeast wind 3 to 7 mph.
Wednesday Night
Mostly clear, with a low around 60. Northeast wind 5 to 9 mph.
Thursday
Mostly sunny, with a high near 82. East northeast wind 11 to 14 mph, with gusts as high as 18 mph.
Thursday Night
Partly cloudy, with a low around 57. East northeast wind 8 to 11 mph, with gusts as high as 16 mph.
Friday
Partly sunny, with a high near 79.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 77.
Sunday Night
Mostly clear, with a low around 55.
Monday
Sunny, with a high near 79.
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)
2:51 am CDT May 26, 2026
3am CDT May 26, 2026-6pm CDT Jun 1, 2026


