Haines Borough, Alaska · Frost dates
Haines Borough frost dates.
First-frost, last-frost, and growing-season length for Haines Borough, Alaska. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 05-07
- 20%
- 05-03
- 50%
- 04-25
- 80%
- 04-16
- 90%
- 04-10
First fall frost
- 10%
- 09-30
- 20%
- 10-02
- 50%
- 10-12
- 80%
- 10-24
- 90%
- 10-29
28°F — killing freeze
Last spring freeze
- 10%
- 04-22
- 20%
- 04-17
- 50%
- 04-07
- 80%
- 03-31
- 90%
- 03-26
First fall freeze
- 10%
- 10-11
- 20%
- 10-16
- 50%
- 10-29
- 80%
- 11-07
- 90%
- 11-13
Growing season length (days, 28°F threshold)
- Short year
- 172
- Median
- 205
- Long year
- 232
Source NOAA station
HAINES AP, AK US
10.3 mi · 30 yrs of record (1991–2020) · 15 ft elev.
Data from HAINES AP, AK US, 10.3 miles away with 30-year NOAA record (1991-2020).
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