Winchester, NH Weather & Growing Conditions
Overnight
46°F
Partly Cloudy
Partly cloudy, with a low around 46. South wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 46°F | Partly Cloudy | 0 mph | 2% |
| Wednesday | 71°F | Sunny | 0 to 5 mph S | 2% |
| Wednesday Night | 53°F | Partly Cloudy | 5 mph S | 1% |
| Thursday | 67°F | Light Rain Likely | 5 to 10 mph S | 64% |
| Thursday Night | 57°F | Light Rain Likely | 0 to 5 mph S | 58% |
| Friday | 67°F | Light Rain Likely | 0 mph | 67% |
| Friday Night | 51°F | Light Rain | 0 mph | 75% |
| Saturday | 61°F | Chance Light Rain | 0 to 5 mph N | 48% |
| Saturday Night | 41°F | Chance Light Rain | 0 to 5 mph NW | 36% |
| Sunday | 54°F | Chance Light Rain then Partly Sunny | 5 to 10 mph NW | 27% |
| Sunday Night | 33°F | Partly Cloudy | 0 to 5 mph W | 7% |
| Monday | 51°F | Mostly Sunny | 5 to 10 mph W | 14% |
| Monday Night | 31°F | Partly Cloudy | 5 mph W | 10% |
| Tuesday | 55°F | Mostly Sunny | 5 to 10 mph SW | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Winchester, NH
Last spring frost
Apr 25
First fall frost
Oct 17
Growing season
175 days
Hardiness zone
6a
Explore more for Winchester, NH: full frost dates · planting calendar · New Hampshire frost dates
Climate data from the nearest NOAA station, Tully Lake, Ma (11.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.