Wilton, WI Weather & Growing Conditions
Tonight
54°F
Rain Showers
Rain showers. Cloudy. Low around 54, with temperatures rising to around 57 overnight. South wind 8 to 12 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Rain Showers | 8 to 12 mph S | 90% |
| Wednesday | 58°F | Rain Showers | 9 to 14 mph S | 80% |
| Wednesday Night | 44°F | Rain Showers | 14 mph SW | 80% |
| Thursday | 51°F | Rain Showers | 12 mph NW | 76% |
| Thursday Night | 35°F | Slight Chance Rain Showers then Mostly Cloudy | 12 mph N | 17% |
| Friday | 49°F | Partly Sunny | 2 to 9 mph N | 3% |
| Friday Night | 28°F | Partly Cloudy | 1 mph N | 1% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph W | 1% |
| Saturday Night | 32°F | Partly Cloudy | 3 mph W | 7% |
| Sunday | 57°F | Slight Chance Rain Showers | 3 to 9 mph W | 17% |
| Sunday Night | 33°F | Mostly Clear | 5 mph SW | 3% |
| Monday | 61°F | Mostly Sunny | 3 to 13 mph SW | 1% |
| Monday Night | 37°F | Partly Cloudy | 7 mph W | 1% |
| Tuesday | 59°F | Sunny | 5 to 8 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Wilton, WI
Last spring frost
May 5
First fall frost
Oct 4
Growing season
153 days
Hardiness zone
5a
Explore more for Wilton, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Hillsboro, Wi (14.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.