Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Overcast
15°F
-9°C
| Humidity | 67% |
| Wind Speed | N 9 mph |
| Barometer | 30.40 in (1030.9 mb) |
| Dewpoint | 6°F (-14°C) |
| Visibility | 10.00 mi |
| Wind Chill | 3°F (-16°C) |
| Last update | 30 Jan 5:54 pm CST |
Extended Forecast for
Forsyth IL
Tonight
Low: 2 °F
Slight Chance
Snow then
Partly CloudySaturday

High: 20 °F
Mostly Sunny
Saturday Night

Low: 0 °F
Mostly Clear
Sunday

High: 23 °F
Partly Sunny
Sunday Night
Low: 15 °F
Chance Snow
then Mostly
CloudyMonday

High: 31 °F
Partly Sunny
Monday Night

Low: 18 °F
Mostly Cloudy
Tuesday

High: 31 °F
Chance Snow
Tuesday Night

Low: 17 °F
Mostly Cloudy
Detailed Forecast
Tonight
A slight chance of snow before 9pm, then a chance of flurries between 9pm and midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 2. Wind chill values between -5 and -15. North wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 20. Wind chill values between -4 and -14. Northwest wind 9 to 15 mph, with gusts as high as 21 mph.
Saturday Night
Mostly clear, with a low around 0. Wind chill values between -5 and -10. Northwest wind 5 to 8 mph becoming west southwest after midnight.
Sunday
Partly sunny, with a high near 23. Wind chill values between -9 and 1. South southwest wind 5 to 11 mph, with gusts as high as 15 mph.
Sunday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 15. South wind 7 to 9 mph.
Monday
Partly sunny, with a high near 31. West wind 6 to 10 mph.
Monday Night
Mostly cloudy, with a low around 18. West wind around 6 mph becoming east after midnight.
Tuesday
A 40 percent chance of snow. Cloudy, with a high near 31.
Tuesday Night
Mostly cloudy, with a low around 17.
Wednesday
Mostly cloudy, with a high near 26.
Wednesday Night
Mostly cloudy, with a low around 9.
Thursday
Partly sunny, with a high near 29.
Thursday Night
Mostly cloudy, with a low around 22.
Friday
Partly sunny, with a high near 35.
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)
3:16 pm CST Jan 30, 2026
6pm CST Jan 30, 2026-6pm CST Feb 6, 2026



