Winchester, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Winchester, a community in Middlesex County, Massachusetts.
This Afternoon
80°F
Sunny
Sunny, with a high near 80. Northwest wind around 9 mph, with gusts as high as 23 mph.
7-day forecast for Winchester
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 80°F | Sunny | 9 mph NW | 0% |
| Tonight | 49°F | Partly Cloudy | 5 to 9 mph N | 0% |
| Saturday | 64°F | Sunny | 6 mph NE | 0% |
| Saturday Night | 46°F | Partly Cloudy | 1 to 6 mph S | 1% |
| Sunday | 64°F | Rain Showers Likely | 1 to 6 mph SE | 73% |
| Sunday Night | 55°F | Rain Showers | 3 to 8 mph E | 84% |
| Monday | 65°F | Chance Rain Showers then Partly Sunny | 7 to 10 mph NE | 32% |
| Monday Night | 52°F | Partly Cloudy | 3 to 9 mph NE | 5% |
| Tuesday | 61°F | Partly Sunny | 12 mph NE | 5% |
| Tuesday Night | 51°F | Mostly Cloudy | 6 to 12 mph NE | 2% |
| Wednesday | 61°F | Partly Sunny | 12 to 16 mph NE | 5% |
| Wednesday Night | 50°F | Mostly Cloudy then Slight Chance Rain Showers | 8 to 13 mph NE | 16% |
| Thursday | 61°F | Chance Rain Showers | 14 mph NE | 29% |
| Thursday Night | 51°F | Chance Rain Showers | 8 to 13 mph NE | 38% |
Forecast source: National Weather Service (api.weather.gov) for Winchester (42.453, -71.144). Updated through the day.
Growing snapshot for Winchester
Last spring frost
Apr 25
First fall frost
Oct 17
Growing season
174 days
Hardiness zone
6b
More local growing data for Winchester: nearby ZIP 01890 weather · frost dates · planting calendar · Massachusetts frost dates
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Climate data from the nearest NOAA station, Reading, Ma (5 mi from Winchester). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.