Wilton, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Wilton, a village in Monroe County, Wisconsin.
This Afternoon
63°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 2pm, then a chance of showers and thunderstorms. Cloudy. High near 63, with temperatures falling to around 61 in the afternoon. East wind around 7 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Wilton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 63°F | Showers And Thunderstorms Likely | 7 mph E | 66% |
| Tonight | 52°F | Chance Showers And Thunderstorms | 8 mph NE | 52% |
| Sunday | 69°F | Partly Sunny | 8 to 13 mph NE | 10% |
| Sunday Night | 46°F | Mostly Cloudy | 9 mph NE | 7% |
| Monday | 64°F | Mostly Cloudy | 7 to 12 mph E | 8% |
| Monday Night | 43°F | Mostly Cloudy | 2 to 8 mph NE | 7% |
| Tuesday | 63°F | Mostly Sunny | 3 to 9 mph E | 7% |
| Tuesday Night | 41°F | Mostly Clear | 1 to 6 mph NE | 3% |
| Wednesday | 67°F | Sunny | 1 to 6 mph E | 2% |
| Wednesday Night | 44°F | Mostly Clear | 0 to 3 mph NE | 2% |
| Thursday | 68°F | Mostly Sunny | 0 to 3 mph NE | 5% |
| Thursday Night | 46°F | Partly Cloudy | 2 mph NE | 4% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph E | 3% |
| Friday Night | 47°F | Partly Cloudy | 2 mph E | 2% |
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.