Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
27°F
-3°C
| Humidity | 85% |
| Wind Speed | Calm |
| Barometer | 30.29 in (1026.4 mb) |
| Dewpoint | 23°F (-5°C) |
| Visibility | 10.00 mi |
| Last update | 11 Feb 11:54 pm CST |
Extended Forecast for
Forsyth IL
Overnight

Low: 30 °F
Mostly Cloudy
Thursday

High: 48 °F
Decreasing
CloudsThursday Night

Low: 28 °F
Partly Cloudy
Friday

High: 52 °F
Sunny
Friday Night

Low: 31 °F
Partly Cloudy
Saturday

High: 53 °F
Mostly Cloudy
Saturday Night

Low: 37 °F
Chance Rain
Sunday

High: 55 °F
Mostly Sunny
Sunday Night

Low: 32 °F
Mostly Clear
Detailed Forecast
Overnight
Mostly cloudy, with a low around 30. Light and variable wind.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 48. Calm wind becoming south southwest around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 28. South southeast wind around 6 mph.
Friday
Sunny, with a high near 52. South southwest wind 6 to 11 mph, with gusts as high as 16 mph.
Friday Night
Partly cloudy, with a low around 31. South wind around 6 mph.
Saturday
Mostly cloudy, with a high near 53. South southeast wind 6 to 8 mph.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 37. East southeast wind 7 to 9 mph becoming northeast after midnight.
Sunday
Mostly sunny, with a high near 55.
Sunday Night
Mostly clear, with a low around 32.
Washington's Birthday
Partly sunny, with a high near 57.
Monday Night
Mostly cloudy, with a low around 41.
Tuesday
Mostly cloudy, with a high near 60. Breezy.
Tuesday Night
Mostly cloudy, with a low around 49. Breezy.
Wednesday
A chance of rain. Mostly sunny, with a high near 64. Breezy.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Forsyth IL
39.93°N 88.96°W (Elev. 650 ft)
39.93°N 88.96°W (Elev. 650 ft)
12:36 am CST Feb 12, 2026
12am CST Feb 12, 2026-6pm CST Feb 18, 2026


