Hoonah-Angoon Census Area, Alaska · Frost dates

Hoonah-Angoon Census Area frost dates.

First-frost, last-frost, and growing-season length for Hoonah-Angoon Census Area, Alaska. Sourced from NOAA 1991-2020 Climate Normals.

Data confidence: high · USDA zone: 4a

32°F — light freeze

Last spring frost

10%
05-26
20%
05-18
50%
05-06
80%
04-27
90%
04-22

First fall frost

10%
09-19
20%
09-27
50%
10-10
80%
10-23
90%
10-28

28°F — killing freeze

Last spring freeze

10%
05-10
20%
05-03
50%
04-20
80%
04-06
90%
04-01

First fall freeze

10%
09-28
20%
10-09
50%
10-28
80%
11-09
90%
11-17

Growing season length (days, 28°F threshold)

Short year
141
Median
191
Long year
230

Source NOAA station

GLACIER BAY, AK US

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

Data from GLACIER BAY, AK US, 3.7 miles away with 30-year NOAA record (1991-2020).

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