Winchester, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Winchester, a community in Middlesex County, Massachusetts.
Today
85°F
Sunny
Sunny, with a high near 85. West wind around 7 mph.
7-day forecast for Winchester
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny | 7 mph W | 0% |
| Tonight | 63°F | Partly Cloudy | 2 to 6 mph SW | 2% |
| Wednesday | 85°F | Mostly Sunny | 2 to 7 mph W | 1% |
| Wednesday Night | 68°F | Partly Cloudy | 6 mph SW | 5% |
| Thursday | 88°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 8 mph SW | 16% |
| Thursday Night | 73°F | Slight Chance Rain Showers then Partly Cloudy | 7 mph SW | 21% |
| Friday | 91°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 8 mph SW | 21% |
| Friday Night | 72°F | Chance Rain Showers | 3 to 7 mph W | 29% |
| Saturday | 88°F | Mostly Sunny then Chance Rain Showers | 3 to 7 mph W | 31% |
| Saturday Night | 71°F | Chance Rain Showers then Mostly Cloudy | 6 mph SW | 43% |
| Sunday | 89°F | Mostly Sunny | 3 to 8 mph W | 11% |
| Sunday Night | 71°F | Mostly Clear | 5 to 8 mph SW | 13% |
| Monday | 90°F | Sunny | 5 to 10 mph SW | 9% |
| Monday Night | 70°F | Mostly Clear | 10 mph W | 11% |
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 Aug 4, 2026.