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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

WhenTempForecastWindPrecip
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

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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.