Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
49°F
9°C
| Humidity | 66% |
| Wind Speed | NW 5 mph |
| Barometer | 29.80 in (1009.0 mb) |
| Dewpoint | 38°F (3°C) |
| Visibility | 10.00 mi |
| Wind Chill | 47°F (8°C) |
| Last update | 8 Nov 12:54 am CST |
Extended Forecast for
Forsyth IL
Overnight

Low: 39 °F
Mostly Clear
Saturday
High: 58 °F
Mostly Cloudy
then Rain
LikelySaturday Night
Low: 31 °F
Rain then
Chance
Rain/SnowSunday

High: 39 °F
Partly Sunny
and BreezySunday Night

Low: 22 °F
Partly Cloudy
Monday
High: 39 °F
Sunny then
Sunny and
BreezyMonday Night

Low: 23 °F
Partly Cloudy
Veterans Day

High: 51 °F
Partly Sunny
and BreezyTuesday Night

Low: 38 °F
Mostly Clear
Detailed Forecast
Overnight
Mostly clear, with a low around 39. Northwest wind around 6 mph becoming calm.
Saturday
Rain likely, mainly after 3pm. Cloudy, with a high near 58. Calm wind becoming west northwest 5 to 7 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain before 3am, then a chance of rain and snow. Low around 31. East northeast wind 7 to 12 mph becoming north northwest 13 to 18 mph in the evening. Winds could gust as high as 25 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Sunday
Partly sunny, with a high near 39. Breezy, with a northwest wind 17 to 23 mph, with gusts as high as 31 mph.
Sunday Night
Partly cloudy, with a low around 22. West northwest wind 13 to 17 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 39. Breezy, with a northwest wind 13 to 20 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 23. West wind 8 to 11 mph becoming south southwest after midnight. Winds could gust as high as 15 mph.
Veterans Day
Partly sunny, with a high near 51. Breezy.
Tuesday Night
Mostly clear, with a low around 38.
Wednesday
Sunny, with a high near 58.
Wednesday Night
Mostly clear, with a low around 32.
Thursday
Sunny, with a high near 57.
Thursday Night
Partly cloudy, with a low around 36.
Friday
Sunny, with a high near 61.
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 Nov 8, 2025
1am CST Nov 8, 2025-6pm CST Nov 14, 2025


