Windsor, WI Weather & Growing Conditions
Overnight
56°F
Showers And Thunderstorms
Showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy. Low around 56, with temperatures rising to around 61 overnight. East wind 10 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Showers And Thunderstorms | 10 to 15 mph E | 100% |
| Saturday | 69°F | Showers And Thunderstorms | 5 to 10 mph SE | 100% |
| Saturday Night | 56°F | Showers And Thunderstorms | 5 to 10 mph E | 82% |
| Sunday | 66°F | Scattered Rain Showers then Partly Sunny | 15 mph NE | 28% |
| Sunday Night | 51°F | Mostly Cloudy | 15 mph NE | 5% |
| Monday | 63°F | Mostly Cloudy then Chance Rain Showers | 15 mph NE | 26% |
| Monday Night | 47°F | Chance Rain Showers | 10 to 15 mph NE | 26% |
| Tuesday | 62°F | Slight Chance Rain Showers then Partly Sunny | 10 to 15 mph NE | 22% |
| Tuesday Night | 45°F | Partly Cloudy | 5 to 10 mph NE | 7% |
| Wednesday | 65°F | Mostly Sunny | 5 to 10 mph NE | 6% |
| Wednesday Night | 48°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Thursday | 69°F | Mostly Sunny | 0 to 5 mph NE | 5% |
| Thursday Night | 49°F | Partly Cloudy | 0 to 5 mph N | 6% |
| Friday | 70°F | Mostly Sunny | 0 to 5 mph N | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Windsor, WI
Last spring frost
May 4
First fall frost
Oct 6
Growing season
154 days
Hardiness zone
5a
Explore more for Windsor, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Arlington, Wi (1.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.