Windsor, WI Weather & Growing Conditions
Today
82°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Southwest wind around 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Partly Sunny then Chance Showers And Thunderstorms | 10 mph SW | 35% |
| Tonight | 61°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph W | 80% |
| Wednesday | 75°F | Patchy Fog then Mostly Cloudy | 0 to 5 mph W | 40% |
| Wednesday Night | 57°F | Mostly Cloudy | 0 mph | 14% |
| Thursday | 79°F | Mostly Sunny | 0 mph | 10% |
| Thursday Night | 59°F | Mostly Clear | 0 mph | 4% |
| Friday | 81°F | Sunny | 0 to 5 mph SW | 2% |
| Friday Night | 62°F | Mostly Clear | 0 to 5 mph SW | 4% |
| Saturday | 83°F | Mostly Sunny | 5 to 10 mph SW | 13% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 5 mph SW | 30% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 30% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph SW | 50% |
| Monday | 83°F | Chance Rain Showers | 5 mph SW | 50% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 5 mph N | 42% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Windsor, WI
Last spring frost
May 1
First fall frost
Oct 10
Growing season
160 days
Hardiness zone
5a
Explore more for Windsor, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Madison Dane Rgnl Ap, Wi (4.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.