Winchester, NH Weather & Growing Conditions
Today
81°F
Sunny
Sunny, with a high near 81. West wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Sunny | 0 to 5 mph W | 0% |
| Tonight | 57°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Wednesday | 82°F | Partly Sunny | 0 to 5 mph S | 0% |
| Wednesday Night | 65°F | Partly Cloudy | 0 to 5 mph S | 9% |
| Thursday | 84°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 60% |
| Thursday Night | 68°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 52% |
| Friday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 35% |
| Friday Night | 67°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 33% |
| Saturday | 84°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph W | 38% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph W | 34% |
| Sunday | 85°F | Sunny | 0 to 5 mph W | 11% |
| Sunday Night | 66°F | Mostly Clear | 0 to 5 mph SW | 11% |
| Monday | 84°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SW | 18% |
| Monday Night | 63°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph W | 17% |
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 Aug 4, 2026.