Waynesville, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Waynesville, a village in De Witt County, Illinois.
This Afternoon
82°F
Slight Chance Showers And Thunderstorms
A chance of rain showers before 4pm, then a slight chance of showers and thunderstorms between 4pm and 5pm. Mostly sunny. High near 82, with temperatures falling to around 77 in the afternoon. East northeast wind around 10 mph. Chance of precipitation is 40%.
7-day forecast for Waynesville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 82°F | Slight Chance Showers And Thunderstorms | 10 mph ENE | 37% |
| Tonight | 69°F | Partly Cloudy | 10 mph ESE | 4% |
| Saturday | 88°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 9 mph S | 20% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 5 to 8 mph SSW | 31% |
| Sunday | 81°F | Showers And Thunderstorms Likely | 6 to 15 mph NNE | 62% |
| Sunday Night | 59°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 14 to 17 mph NE | 62% |
| Monday | 68°F | Showers And Thunderstorms Likely | 15 to 18 mph ENE | 62% |
| Monday Night | 54°F | Chance Showers And Thunderstorms | 14 to 20 mph NE | 50% |
| Tuesday | 66°F | Chance Rain Showers | 16 mph NE | 30% |
| Tuesday Night | 51°F | Mostly Cloudy | 8 to 16 mph NNE | 6% |
| Wednesday | 69°F | Partly Sunny | 13 mph NNE | 2% |
| Wednesday Night | 53°F | Partly Cloudy | 6 to 12 mph NNE | 2% |
| Thursday | 70°F | Mostly Sunny | 9 mph NNE | 2% |
| Thursday Night | 54°F | Partly Cloudy | 5 to 8 mph NNE | 4% |
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 Sep 18, 2026.