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Shirley, MA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Shirley, a community in Middlesex County, Massachusetts.

Tonight
50°F
Mostly Cloudy
Mostly cloudy, with a low around 50. Southwest wind around 5 mph.

7-day forecast for Shirley

WhenTempForecastWindPrecip
Tonight 50°F Mostly Cloudy 5 mph SW 3%
Wednesday 75°F Mostly Sunny 3 to 9 mph SW 4%
Wednesday Night 54°F Partly Cloudy 7 mph SW 2%
Thursday 73°F Chance Light Rain 5 to 10 mph SW 28%
Thursday Night 61°F Light Rain Likely 2 to 7 mph SW 57%
Friday 70°F Rain 3 mph S 82%
Friday Night 54°F Rain 2 mph NE 83%
Saturday 63°F Light Rain Likely 6 mph NW 69%
Saturday Night 42°F Chance Light Rain 5 mph NW 46%
Sunday 59°F Slight Chance Light Rain then Mostly Sunny 7 mph W 24%
Sunday Night 36°F Partly Cloudy 3 mph W 10%
Monday 57°F Slight Chance Light Rain 5 to 9 mph W 20%
Monday Night 35°F Slight Chance Light Rain 6 mph W 20%
Tuesday 57°F Mostly Sunny 6 to 12 mph W 11%

Forecast source: National Weather Service (api.weather.gov) for Shirley (42.536, -71.667). Updated through the day.

Growing snapshot for Shirley

Last spring frost
Apr 29
First fall frost
Oct 11
Growing season
164 days
Hardiness zone
6a

More local growing data for Shirley: nearby ZIP 01464 weather · frost dates · planting calendar · Massachusetts frost dates

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Climate data from the nearest NOAA station, Fitchburg Muni Ap, Ma (6 mi from Shirley). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.