Aleutians East Borough, Alaska · Frost dates
Aleutians East Borough frost dates.
First-frost, last-frost, and growing-season length for Aleutians East Borough, Alaska. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: moderate · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 06-10
- 20%
- 06-05
- 50%
- 05-25
- 80%
- 05-15
- 90%
- 05-09
First fall frost
- 10%
- 09-20
- 20%
- 09-26
- 50%
- 10-04
- 80%
- 10-14
- 90%
- 10-20
28°F — killing freeze
Last spring freeze
- 10%
- 05-27
- 20%
- 05-20
- 50%
- 05-08
- 80%
- 04-29
- 90%
- 04-23
First fall freeze
- 10%
- 10-04
- 20%
- 10-08
- 50%
- 10-21
- 80%
- 11-01
- 90%
- 11-06
Growing season length (days, 28°F threshold)
- Short year
- 130
- Median
- 166
- Long year
- 197
Source NOAA station
COLD BAY AP, AK US
29.0 mi · 30 yrs of record (1991–2020) · 78 ft elev.
Nearest qualifying NOAA station is COLD BAY AP, AK US, 29 miles away. Local frost dates may vary by 1–2 weeks from these averages.
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