Chugach Census Area, Alaska · Frost dates

Chugach Census Area frost dates.

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

Data confidence: high · USDA zone: 4a

32°F — light freeze

Last spring frost

10%
05-13
20%
05-08
50%
04-29
80%
04-15
90%
04-09

First fall frost

10%
09-25
20%
10-01
50%
10-13
80%
10-27
90%
11-04

28°F — killing freeze

Last spring freeze

10%
04-30
20%
04-23
50%
04-10
80%
04-01
90%
03-25

First fall freeze

10%
10-05
20%
10-12
50%
10-27
80%
11-11
90%
11-21

Growing season length (days, 28°F threshold)

Short year
158
Median
200
Long year
241

Source NOAA station

CORDOVA WWTP, AK US

14.8 mi · 30 yrs of record (19912020) · 10 ft elev.

Data from CORDOVA WWTP, AK US, 14.8 miles away with 30-year NOAA record (1991-2020).

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