Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Overcast
30°F
-1°C
| Humidity | 36% |
| Wind Speed | S 15 mph |
| Barometer | 30.27 in (1026.0 mb) |
| Dewpoint | 6°F (-14°C) |
| Visibility | 10.00 mi |
| Wind Chill | 19°F (-7°C) |
| Last update | 20 Jan 4:54 pm CST |
Extended Forecast for
3 Miles WSW Forsyth IL
Tonight
Low: 24 °F
Mostly Cloudy
then Chance
SnowWednesday
High: 38 °F
Slight Chance
Snow then
SunnyWednesday Night
Low: 19 °F
Partly Cloudy
Thursday
High: 30 °F
Partly Sunny
Thursday Night
Low: 1 °F
Mostly Cloudy
Friday
High: 7 °F
Cold
Friday Night
Low: -3 °F
Mostly Cloudy
Saturday
High: 12 °F
Cloudy then
Chance SnowSaturday Night
Low: 5 °F
Chance Snow
then Mostly
Cloudy
Detailed Forecast
Tonight
A 30 percent chance of snow, mainly after 5am. Mostly cloudy, with a low around 24. South wind 10 to 17 mph, with gusts as high as 28 mph.
Wednesday
A 20 percent chance of snow before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 38. West wind 13 to 16 mph, with gusts as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 19. West northwest wind 10 to 17 mph, with gusts as high as 25 mph.
Thursday
Partly sunny, with a high near 30. West northwest wind 7 to 10 mph, with gusts as high as 16 mph.
Thursday Night
Mostly cloudy, with a low around 1. North northwest wind 6 to 11 mph increasing to 12 to 17 mph after midnight. Winds could gust as high as 23 mph.
Friday
Partly sunny and cold, with a high near 7. North wind 14 to 18 mph, with gusts as high as 24 mph.
Friday Night
Mostly cloudy, with a low around -3. North northeast wind 11 to 13 mph, with gusts as high as 18 mph.
Saturday
A 30 percent chance of snow after noon. Cloudy, with a high near 12.
Saturday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 5.
Sunday
Partly sunny, with a high near 18.
Sunday Night
Partly cloudy, with a low around 3.
Monday
Mostly sunny, with a high near 20.
Monday Night
Partly cloudy, with a low around 8.
Tuesday
Mostly sunny, with a high near 30.
Additional Forecasts and Information
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Forecast AreaABOUT 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)
3:36 pm CST Jan 20, 2026
5pm CST Jan 20, 2026-6pm CST Jan 27, 2026
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