Waynesville, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Waynesville, a village in De Witt County, Illinois.
Tonight
54°F
Rain
Rain before 3am, then a chance of rain showers. Cloudy, with a low around 54. South wind 15 to 20 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Waynesville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Rain | 15 to 20 mph S | 95% |
| Wednesday | 60°F | Slight Chance Rain Showers then Mostly Cloudy | 14 to 17 mph SW | 18% |
| Wednesday Night | 45°F | Mostly Cloudy | 13 mph SW | 2% |
| Thursday | 60°F | Mostly Sunny | 12 to 16 mph WSW | 6% |
| Thursday Night | 43°F | Mostly Cloudy then Slight Chance Light Rain | 6 to 9 mph WNW | 21% |
| Friday | 55°F | Slight Chance Light Rain then Mostly Cloudy | 8 to 13 mph NNW | 16% |
| Friday Night | 36°F | Mostly Cloudy | 3 to 10 mph N | 6% |
| Saturday | 53°F | Mostly Sunny | 6 mph NW | 2% |
| Saturday Night | 34°F | Partly Cloudy | 5 mph W | 3% |
| Sunday | 59°F | Sunny | 5 to 12 mph W | 12% |
| Sunday Night | 35°F | Mostly Clear | 5 to 8 mph WNW | 7% |
| Monday | 63°F | Sunny | 5 to 13 mph SW | 3% |
| Monday Night | 39°F | Mostly Clear | 6 to 10 mph WSW | 2% |
| Tuesday | 66°F | Sunny | 8 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Waynesville (40.241, -89.124). Updated through the day.
Growing snapshot for Waynesville
Last spring frost
Apr 20
First fall frost
Oct 16
Growing season
179 days
Hardiness zone
6a
More local growing data for Waynesville: nearby ZIP 61778 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Lincoln, Il (14 mi from Waynesville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.