Plymouth County, Massachusetts · Frost dates

Plymouth County frost dates.

First-frost, last-frost, and growing-season length for Plymouth County, Massachusetts. Sourced from NOAA 1991-2020 Climate Normals.

Data confidence: high · USDA zone: 6a

32°F — light freeze

Last spring frost

10%
04-28
20%
04-24
50%
04-15
80%
04-06
90%
04-02

First fall frost

10%
10-17
20%
10-23
50%
11-01
80%
11-10
90%
11-14

28°F — killing freeze

Last spring freeze

10%
04-18
20%
04-12
50%
04-03
80%
03-26
90%
03-19

First fall freeze

10%
10-31
20%
11-04
50%
11-13
80%
11-23
90%
11-30

Growing season length (days, 28°F threshold)

Short year
196
Median
224
Long year
256

Source NOAA station

PLYMOUTH-KINGSTON, MA US

2.4 mi · 30 yrs of record (19912020) · 45 ft elev.

Data from PLYMOUTH-KINGSTON, MA US, 2.4 miles away with 30-year NOAA record (1991-2020).

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