Wilton, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Wilton, a village in Monroe County, Wisconsin.
Tonight
54°F
Showers And Thunderstorms
Showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 54. East wind 6 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.
7-day forecast for Wilton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Showers And Thunderstorms | 6 to 15 mph E | 99% |
| Saturday | 63°F | Showers And Thunderstorms | 7 to 12 mph E | 90% |
| Saturday Night | 52°F | Showers And Thunderstorms Likely | 7 to 12 mph NE | 66% |
| Sunday | 68°F | Partly Sunny | 9 to 13 mph NE | 14% |
| Sunday Night | 47°F | Mostly Cloudy | 10 mph NE | 5% |
| Monday | 64°F | Mostly Cloudy then Slight Chance Rain Showers | 8 to 12 mph NE | 21% |
| Monday Night | 43°F | Chance Rain Showers | 3 to 9 mph NE | 25% |
| Tuesday | 62°F | Chance Rain Showers then Partly Sunny | 5 to 9 mph NE | 25% |
| Tuesday Night | 42°F | Partly Cloudy | 1 to 6 mph NE | 4% |
| Wednesday | 66°F | Sunny | 1 to 6 mph E | 2% |
| Wednesday Night | 45°F | Partly Cloudy | 2 mph NE | 3% |
| Thursday | 69°F | Mostly Sunny | 2 mph E | 7% |
| Thursday Night | 47°F | Partly Cloudy | 1 mph NE | 7% |
| Friday | 71°F | Mostly Sunny | 0 to 3 mph NE | 3% |
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 Sep 19, 2026.