Southeastern Connecticut Planning Region, Connecticut · Frost dates

Southeastern Connecticut Planning Region frost dates.

First-frost, last-frost, and growing-season length for Southeastern Connecticut Planning Region, Connecticut. Sourced from NOAA 1991-2020 Climate Normals.

Data confidence: high · USDA zone: 6b

32°F — light freeze

Last spring frost

10%
04-30
20%
04-24
50%
04-14
80%
04-06
90%
04-01

First fall frost

10%
10-09
20%
10-13
50%
10-24
80%
11-03
90%
11-07

28°F — killing freeze

Last spring freeze

10%
04-16
20%
04-09
50%
04-01
80%
03-25
90%
03-18

First fall freeze

10%
10-19
20%
10-26
50%
11-05
80%
11-14
90%
11-21

Growing season length (days, 28°F threshold)

Short year
186
Median
218
Long year
248

Source NOAA station

NORWICH PUBLIC UTILITY PLT, CT US

3.5 mi · 30 yrs of record (19912020) · 20 ft elev.

Data from NORWICH PUBLIC UTILITY PLT, CT US, 3.5 miles away with 30-year NOAA record (1991-2020).

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