Winchester, WI Weather & Growing Conditions
Today
63°F
Showers And Thunderstorms
Rain showers likely before 1pm, then showers and thunderstorms. Cloudy, with a high near 63. East wind around 12 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 63°F | Showers And Thunderstorms | 12 mph E | 79% |
| Tonight | 54°F | Chance Showers And Thunderstorms then Cloudy | 10 mph NE | 50% |
| Sunday | 67°F | Mostly Sunny | 10 to 15 mph NE | 4% |
| Sunday Night | 48°F | Mostly Cloudy | 9 to 13 mph NE | 1% |
| Monday | 61°F | Mostly Cloudy | 9 to 13 mph NE | 2% |
| Monday Night | 45°F | Mostly Cloudy | 7 to 10 mph NE | 2% |
| Tuesday | 62°F | Mostly Sunny | 7 to 12 mph NE | 2% |
| Tuesday Night | 45°F | Mostly Clear | 7 mph NE | 2% |
| Wednesday | 64°F | Sunny | 5 to 9 mph NE | 1% |
| Wednesday Night | 47°F | Mostly Clear | 2 to 6 mph NE | 1% |
| Thursday | 67°F | Mostly Sunny | 6 mph NE | 2% |
| Thursday Night | 48°F | Partly Cloudy | 1 to 5 mph NE | 2% |
| Friday | 70°F | Mostly Sunny | 5 mph ENE | 3% |
| Friday Night | 48°F | Partly Cloudy | 3 mph ENE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Winchester, WI
Last spring frost
May 4
First fall frost
Oct 6
Growing season
153 days
Hardiness zone
5b
Explore more for Winchester, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, New London, Wi (10.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.