Hazardous Weather Conditions
Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fog/Mist
43°F
6°C
| Humidity | 97% |
| Wind Speed | E 9 mph |
| Barometer | 29.97 in (1015.1 mb) |
| Dewpoint | 42°F (6°C) |
| Visibility | 3.00 mi |
| Wind Chill | 38°F (3°C) |
| Last update | 27 Dec 5:54 am CST |
Extended Forecast for
3 Miles WSW Forsyth IL
Dense Fog Advisory until December 27, 10:00am
NOW until 10:00am Sat
Dense Fog Advisory
Today
High: 55 °F
Patchy Dense
Fog then
Mostly CloudyTonight

Low: 52 °F⇑
Chance
ShowersSunday

High: 67 °F
Showers and
BreezySunday Night
Low: 15 °F
Chance
Rain/Snow and
Blustery then
Mostly Cloudy
and WindyMonday

High: 24 °F
Partly Sunny
and WindyMonday Night
Low: 13 °F
Partly Cloudy
and Blustery
then Mostly
ClearTuesday

High: 29 °F
Mostly Sunny
Tuesday Night

Low: 23 °F
Partly Cloudy
Detailed Forecast
Today
Patchy dense fog before 9am. Otherwise, cloudy, with a high near 55. Southeast wind 6 to 13 mph, with gusts as high as 22 mph.
Tonight
A 40 percent chance of showers, mainly after midnight. Cloudy, with a temperature rising to around 59 by 4am. South wind 11 to 13 mph, with gusts as high as 22 mph.
Sunday
Showers likely and possibly a thunderstorm before noon, then showers between noon and 3pm, then showers and possibly a thunderstorm after 3pm. High near 67. Breezy, with a south southwest wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A chance of rain showers, mixing with snow after 9pm, then gradually ending. Mostly cloudy, with a low around 15. Wind chill values between -2 and 8. Windy, with a west northwest wind 22 to 32 mph, with gusts as high as 40 mph. Chance of precipitation is 50%.
Monday
Partly sunny, with a high near 24. Windy, with a west northwest wind 23 to 32 mph, with gusts as high as 45 mph.
Monday Night
Mostly clear, with a low around 13. Blustery, with a west northwest wind 15 to 22 mph, with gusts as high as 33 mph.
Tuesday
Mostly sunny, with a high near 29. West wind 11 to 14 mph, with gusts as high as 21 mph.
Tuesday Night
Partly cloudy, with a low around 23.
Wednesday
Partly sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 16.
New Year's Day
Mostly sunny, with a high near 25.
Thursday Night
Mostly clear, with a low around 9.
Friday
Sunny, with a high near 26.
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)
3:16 am CST Dec 27, 2025
6am CST Dec 27, 2025-6pm CST Jan 2, 2026



