Winchester, WI Weather & Growing Conditions
This Afternoon
68°F
Chance Rain Showers
A chance of rain showers and patchy fog. Cloudy. High near 68, with temperatures falling to around 66 in the afternoon. South wind around 13 mph, with gusts as high as 23 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 |
|---|---|---|---|---|
| This Afternoon | 68°F | Chance Rain Showers | 13 mph S | 35% |
| Tonight | 58°F | Rain Showers | 10 mph SSE | 91% |
| Wednesday | 64°F | Rain Showers | 10 to 15 mph S | 89% |
| Wednesday Night | 47°F | Rain Showers Likely | 14 mph SW | 69% |
| Thursday | 53°F | Rain Showers | 8 to 12 mph WNW | 87% |
| Thursday Night | 38°F | Chance Rain Showers then Mostly Cloudy | 14 mph N | 39% |
| Friday | 47°F | Slight Chance Rain Showers then Partly Sunny | 8 to 14 mph N | 15% |
| Friday Night | 31°F | Partly Cloudy | 1 to 5 mph NNW | 3% |
| Saturday | 50°F | Mostly Sunny | 1 to 5 mph W | 1% |
| Saturday Night | 34°F | Partly Cloudy | 5 mph WSW | 11% |
| Sunday | 55°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 10 mph W | 15% |
| Sunday Night | 35°F | Mostly Clear | 7 mph W | 3% |
| Monday | 57°F | Mostly Sunny | 5 to 12 mph SW | 1% |
| Monday Night | 39°F | Partly Cloudy | 8 mph W | 0% |
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 Nov 4, 2026.