Current conditions at
Decatur Airport (KDEC)
Lat: 39.83°NLon: 88.87°WElev: 670ft.
Fair
34°F
1°C
| Humidity | 76% |
| Wind Speed | NW 9 mph |
| Barometer | 30.24 in (1024.5 mb) |
| Dewpoint | 27°F (-3°C) |
| Visibility | 10.00 mi |
| Wind Chill | 27°F (-3°C) |
| Last update | 12 Mar 1:54 am CDT |
Extended Forecast for
3 Miles WSW Forsyth IL
Overnight

Low: 29 °F
Clear
Thursday

High: 50 °F
Increasing
CloudsThursday Night

Low: 41 °F
Mostly Cloudy
and BreezyFriday

High: 54 °F
Partly Sunny
and BreezyFriday Night

Low: 33 °F
Mostly Cloudy
Saturday

High: 54 °F
Mostly Cloudy
Saturday Night

Low: 47 °F
Cloudy
Sunday
High: 63 °F
Breezy. Rain
Likely then
RainSunday Night

Low: 20 °F
Rain/Snow
Likely and
Windy
Detailed Forecast
Overnight
Clear, with a low around 29. Northwest wind 9 to 11 mph, with gusts as high as 18 mph.
Thursday
Increasing clouds, with a high near 50. West wind 7 to 14 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 41. Breezy, with a south wind 15 to 20 mph increasing to 23 to 28 mph after midnight. Winds could gust as high as 43 mph.
Friday
Partly sunny, with a high near 54. Breezy, with a west wind 22 to 26 mph, with gusts as high as 43 mph.
Friday Night
Mostly cloudy, with a low around 33. West northwest wind 6 to 11 mph becoming northeast after midnight. Winds could gust as high as 23 mph.
Saturday
Mostly cloudy, with a high near 54. East southeast wind 9 to 14 mph, with gusts as high as 20 mph.
Saturday Night
Cloudy, with a low around 47. East southeast wind 13 to 18 mph, with gusts as high as 28 mph.
Sunday
Rain. High near 63. Breezy. Chance of precipitation is 90%.
Sunday Night
Rain and snow likely before 1am, then a chance of snow. Cloudy, with a low around 20. Windy. Chance of precipitation is 70%.
Monday
Mostly cloudy, with a high near 26. Windy.
Monday Night
Partly cloudy, with a low around 11. Blustery.
Tuesday
Mostly sunny, with a high near 31.
Tuesday Night
Mostly cloudy, with a low around 23.
Wednesday
Partly sunny, with a high near 49.
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)
1:26 am CDT Mar 12, 2026
2am CDT Mar 12, 2026-6pm CDT Mar 18, 2026


