Winchester, NH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Winchester, a community in Cheshire County, New Hampshire.
This Afternoon
66°F
Mostly Cloudy
Mostly cloudy, with a high near 66. South wind around 0 mph.
7-day forecast for Winchester
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Mostly Cloudy | 0 mph | 6% |
| Tonight | 46°F | Mostly Cloudy | 0 mph | 3% |
| Wednesday | 73°F | Mostly Sunny | 0 to 5 mph S | 4% |
| Wednesday Night | 53°F | Partly Cloudy | 0 to 5 mph S | 2% |
| Thursday | 69°F | Light Rain Likely | 5 to 10 mph S | 64% |
| Thursday Night | 59°F | Scattered Rain Showers | 0 to 5 mph S | 54% |
| Friday | 68°F | Light Rain Likely | 0 mph | 66% |
| Friday Night | 52°F | Light Rain | 0 mph | 77% |
| Saturday | 62°F | Light Rain Likely | 0 to 5 mph NW | 63% |
| Saturday Night | 40°F | Chance Light Rain | 0 to 5 mph NW | 37% |
| Sunday | 58°F | Chance Light Rain | 5 mph W | 29% |
| Sunday Night | 33°F | Partly Cloudy | 0 to 5 mph W | 10% |
| Monday | 56°F | Slight Chance Light Rain | 0 to 10 mph W | 21% |
| Monday Night | 31°F | Slight Chance Light Rain | 0 to 5 mph W | 21% |
Forecast source: National Weather Service (api.weather.gov) for Winchester (42.780, -72.385). Updated through the day.
Growing snapshot for Winchester
Last spring frost
Apr 25
First fall frost
Oct 17
Growing season
175 days
Hardiness zone
6a
More local growing data for Winchester: nearby ZIP 03470 weather · frost dates · planting calendar · New Hampshire frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Tully Lake, Ma (11.2 mi from Winchester). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.