Williamsville, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Williamsville, a city in Wayne County, Missouri.
Today
99°F
Sunny
Sunny. High near 99, with temperatures falling to around 97 in the afternoon. West southwest wind 2 to 6 mph.
7-day forecast for Williamsville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 2 to 6 mph WSW | 1% |
| Tonight | 70°F | Mostly Clear | 3 mph SW | 0% |
| Sunday | 97°F | Mostly Sunny | 1 to 5 mph WSW | 0% |
| Sunday Night | 68°F | Mostly Cloudy then Chance Showers And Thunderstorms | 2 mph NNW | 28% |
| Monday | 88°F | Showers And Thunderstorms Likely | 5 mph NNE | 59% |
| Monday Night | 61°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 mph NNE | 59% |
| Tuesday | 77°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 7 mph N | 22% |
| Tuesday Night | 55°F | Partly Cloudy | 3 to 7 mph N | 4% |
| Wednesday | 77°F | Sunny | 6 mph N | 1% |
| Wednesday Night | 54°F | Mostly Clear | 1 to 5 mph NNE | 1% |
| Thursday | 78°F | Mostly Sunny | 5 mph NNE | 3% |
| Thursday Night | 56°F | Partly Cloudy then Slight Chance Rain Showers | 3 mph NNE | 15% |
| Friday | 79°F | Slight Chance Rain Showers then Mostly Sunny | 2 to 6 mph NNE | 15% |
| Friday Night | 56°F | Partly Cloudy | 1 to 5 mph NNE | 6% |
Forecast source: National Weather Service (api.weather.gov) for Williamsville (36.974, -90.548). Updated through the day.
Growing snapshot for Williamsville
Last spring frost
Apr 2
First fall frost
Nov 2
Growing season
215 days
Hardiness zone
7a
More local growing data for Williamsville: nearby ZIP 63967 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Wappapello Dam, Mo (11.2 mi from Williamsville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.