Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
36°F
2°C
| Humidity | 42% |
| Wind Speed | W 8 mph |
| Barometer | 30.01 in (1016.8 mb) |
| Dewpoint | 15°F (-9°C) |
| Visibility | 10.00 mi |
| Wind Chill | 30°F (-1°C) |
| Last update | 21 Jan 4:54 pm CST |
Extended Forecast for
4 Miles N Forsyth IL
Tonight
Low: 19 °F
Partly Cloudy
and Blustery
then Mostly
ClearThursday

High: 32 °F
Mostly Sunny
Thursday Night

Low: 0 °F
Mostly Cloudy
Friday

High: 7 °F
Cold
Friday Night

Low: -2 °F
Mostly Cloudy
Saturday
High: 13 °F
Cloudy then
Chance SnowSaturday Night

Low: 7 °F
Snow Likely
Sunday

High: 16 °F
Chance Snow
Sunday Night

Low: -2 °F
Mostly Cloudy
Detailed Forecast
Tonight
Partly cloudy, with a low around 19. Blustery, with a west northwest wind 17 to 22 mph decreasing to 7 to 12 mph. Winds could gust as high as 41 mph.
Thursday
Mostly sunny, with a high near 32. West wind 7 to 13 mph, with gusts as high as 21 mph.
Thursday Night
Mostly cloudy, with a low around 0. Wind chill values between -5 and -15. West wind 5 to 10 mph becoming north northwest 12 to 17 mph after midnight. Winds could gust as high as 25 mph.
Friday
Mostly cloudy and cold, with a high near 7. Wind chill values between -10 and -19. North wind 11 to 17 mph, with gusts as high as 24 mph.
Friday Night
Mostly cloudy, with a low around -2. North northeast wind around 13 mph, with gusts as high as 18 mph.
Saturday
A 50 percent chance of snow after noon. Cloudy, with a high near 13. East northeast wind around 14 mph, with gusts as high as 18 mph.
Saturday Night
Snow likely. Cloudy, with a low around 7. Northeast wind around 11 mph, with gusts as high as 17 mph. Chance of precipitation is 70%.
Sunday
A 50 percent chance of snow. Mostly cloudy, with a high near 16.
Sunday Night
Mostly cloudy, with a low around -2.
Monday
Mostly sunny, with a high near 12.
Monday Night
Mostly clear, with a low around 2.
Tuesday
Mostly sunny, with a high near 24.
Tuesday Night
Mostly cloudy, with a low around 10.
Wednesday
Partly sunny, with a high near 22.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
4 Miles N Forsyth IL
39.97°N 88.96°W (Elev. 679 ft)
39.97°N 88.96°W (Elev. 679 ft)
5:21 pm CST Jan 21, 2026
5pm CST Jan 21, 2026-6pm CST Jan 28, 2026



