Lake and Peninsula Borough, Alaska · Frost dates
Lake and Peninsula Borough frost dates.
First-frost, last-frost, and growing-season length for Lake and Peninsula Borough, Alaska. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 06-22
- 20%
- 06-17
- 50%
- 06-09
- 80%
- 06-01
- 90%
- 05-28
First fall frost
- 10%
- 08-26
- 20%
- 09-01
- 50%
- 09-11
- 80%
- 09-22
- 90%
- 09-27
28°F — killing freeze
Last spring freeze
- 10%
- 06-04
- 20%
- 05-31
- 50%
- 05-23
- 80%
- 05-10
- 90%
- 05-04
First fall freeze
- 10%
- 09-05
- 20%
- 09-11
- 50%
- 09-24
- 80%
- 10-03
- 90%
- 10-10
Growing season length (days, 28°F threshold)
- Short year
- 93
- Median
- 124
- Long year
- 159
Source NOAA station
KING SALMON 42 SE, AK US
19.2 mi · 30 yrs of record (1991–2020) · 661 ft elev.
Data from KING SALMON 42 SE, AK US, 19.2 miles away with 30-year NOAA record (1991-2020).
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