Windham County, Vermont · Frost dates

Windham County frost dates.

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

Data confidence: high · USDA zone: 5a

32°F — light freeze

Last spring frost

10%
05-22
20%
05-18
50%
05-08
80%
04-29
90%
04-24

First fall frost

10%
09-22
20%
09-27
50%
10-03
80%
10-14
90%
10-20

28°F — killing freeze

Last spring freeze

10%
05-11
20%
05-04
50%
04-25
80%
04-15
90%
04-10

First fall freeze

10%
10-01
20%
10-05
50%
10-16
80%
10-31
90%
11-03

Growing season length (days, 28°F threshold)

Short year
143
Median
174
Long year
207

Source NOAA station

WALPOLE 2S NEPP, NH US

14.8 mi · 30 yrs of record (19912020) · 604 ft elev.

Data from WALPOLE 2S NEPP, NH US, 14.8 miles away with 30-year NOAA record (1991-2020).

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