Wilton, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Wilton, a village in Monroe County, Wisconsin.
Today
80°F
Mostly Cloudy then Isolated Rain Showers
Isolated rain showers after 4pm. Mostly cloudy. High near 80, with temperatures falling to around 77 in the afternoon. West wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
7-day forecast for Wilton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Mostly Cloudy then Isolated Rain Showers | 6 to 10 mph W | 22% |
| Tonight | 59°F | Scattered Showers And Thunderstorms | 0 to 5 mph W | 35% |
| Wednesday | 79°F | Partly Sunny | 0 to 5 mph NW | 6% |
| Wednesday Night | 54°F | Partly Cloudy | 0 to 3 mph SW | 1% |
| Thursday | 83°F | Sunny | 0 to 3 mph SW | 1% |
| Thursday Night | 58°F | Mostly Clear | 1 to 5 mph SW | 0% |
| Friday | 86°F | Sunny | 1 to 10 mph SW | 4% |
| Friday Night | 63°F | Mostly Clear | 3 to 9 mph SW | 13% |
| Saturday | 87°F | Mostly Sunny | 3 to 8 mph SW | 11% |
| Saturday Night | 66°F | Partly Cloudy then Chance Rain Showers | 3 to 8 mph SW | 34% |
| Sunday | 87°F | Chance Rain Showers | 3 to 10 mph W | 34% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms | 1 to 8 mph S | 43% |
| Monday | 85°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 2 to 6 mph S | 43% |
| Monday Night | 64°F | Chance Showers And Thunderstorms | 1 to 6 mph NE | 29% |
Forecast source: National Weather Service (api.weather.gov) for Wilton (43.813, -90.527). Updated through the day.
Growing snapshot for Wilton
Last spring frost
May 5
First fall frost
Oct 4
Growing season
153 days
Hardiness zone
5a
More local growing data for Wilton: nearby ZIP 54670 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Hillsboro, Wi (14.7 mi from Wilton). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.