Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Overcast
22°F
-6°C
| Humidity | 89% |
| Wind Speed | SW 16 G 24 mph |
| Barometer | 30.09 in (1020.0 mb) |
| Dewpoint | 19°F (-7°C) |
| Visibility | 9.00 mi |
| Wind Chill | 8°F (-13°C) |
| Last update | 3 Dec 12:54 am CST |
Extended Forecast for
3 Miles WSW Forsyth IL
Overnight

Low: 20 °F
Patchy Fog
Wednesday
High: 33 °F
Patchy Fog
then Chance
SnowWednesday Night

Low: 3 °F
Decreasing
CloudsThursday

High: 16 °F
Sunny
Thursday Night

Low: -1 °F
Mostly Clear
Friday

High: 29 °F
Mostly Sunny
Friday Night

Low: 16 °F
Mostly Cloudy
Saturday

High: 29 °F
Partly Sunny
Saturday Night

Low: 19 °F
Mostly Cloudy
Detailed Forecast
Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 20. South wind 9 to 11 mph, with gusts as high as 21 mph.
Wednesday
A 30 percent chance of snow, mainly after 5pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 33. South southwest wind 8 to 13 mph becoming west in the afternoon. Winds could gust as high as 22 mph.
Wednesday Night
Cloudy, then gradually becoming partly cloudy, with a low around 3. Wind chill values between -4 and 1. North wind 9 to 14 mph, with gusts as high as 22 mph.
Thursday
Sunny, with a high near 16. Wind chill values between -1 and -11. North wind 5 to 10 mph becoming light and variable in the afternoon. Winds could gust as high as 15 mph.
Thursday Night
Mostly clear, with a low around -1. Calm wind becoming south 5 to 7 mph after midnight.
Friday
Mostly sunny, with a high near 29. South southwest wind 7 to 10 mph.
Friday Night
Mostly cloudy, with a low around 16. South southwest wind 6 to 8 mph becoming west after midnight.
Saturday
Partly sunny, with a high near 29.
Saturday Night
Mostly cloudy, with a low around 19.
Sunday
A 30 percent chance of snow after noon. Mostly cloudy, with a high near 29.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
Partly sunny, with a high near 28.
Monday Night
Mostly cloudy, with a low around 20.
Tuesday
Partly sunny, with a high near 34.
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)
12:55 am CST Dec 3, 2025
1am CST Dec 3, 2025-6pm CST Dec 9, 2025


