Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
79°F
26°C
| Humidity | 36% |
| Wind Speed | E 8 mph |
| Barometer | 30.14 in (1020.2 mb) |
| Dewpoint | 50°F (10°C) |
| Visibility | 10.00 mi |
| Heat Index | 79°F (26°C) |
| Last update | 25 May 12:54 pm CDT |
Extended Forecast for
4 Miles SW Forsyth IL
Memorial Day
High: 80 °F
Sunny
Tonight
Low: 58 °F
Partly Cloudy
Tuesday
High: 80 °F
Increasing
CloudsTuesday Night
Low: 62 °F
Mostly Cloudy
Wednesday
High: 80 °F
Chance
Showers then
Chance
T-stormsWednesday Night
Low: 61 °F
Mostly Clear
Thursday
High: 82 °F
Mostly Sunny
Thursday Night
Low: 58 °F
Partly Cloudy
Friday
High: 76 °F
Partly Sunny
Detailed Forecast
Memorial Day
Sunny, with a high near 80. East southeast wind around 8 mph.
Tonight
Partly cloudy, with a low around 58. East southeast wind 3 to 6 mph.
Tuesday
Increasing clouds, with a high near 80. East southeast wind around 6 mph.
Tuesday Night
Mostly cloudy, with a low around 62. East wind 3 to 5 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 80. East wind 3 to 7 mph. Chance of precipitation is 40%.
Wednesday Night
Mostly clear, with a low around 61. East northeast wind 3 to 7 mph.
Thursday
Mostly sunny, with a high near 82. East northeast wind 9 to 13 mph, with gusts as high as 17 mph.
Thursday Night
Partly cloudy, with a low around 58.
Friday
Partly sunny, with a high near 76.
Friday Night
Mostly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 75.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Sunny, with a high near 77.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles SW Forsyth IL
39.89°N 89°W (Elev. 659 ft)
39.89°N 89°W (Elev. 659 ft)
1:36 pm CDT May 25, 2026
1pm CDT May 25, 2026-6pm CDT May 31, 2026
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