Juneau City and Borough, Alaska · Frost dates
Juneau City and Borough frost dates.
First-frost, last-frost, and growing-season length for Juneau City and Borough, Alaska. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 05-18
- 20%
- 05-13
- 50%
- 05-03
- 80%
- 04-23
- 90%
- 04-18
First fall frost
- 10%
- 10-01
- 20%
- 10-05
- 50%
- 10-14
- 80%
- 10-24
- 90%
- 10-29
28°F — killing freeze
Last spring freeze
- 10%
- 04-30
- 20%
- 04-23
- 50%
- 04-11
- 80%
- 04-02
- 90%
- 03-26
First fall freeze
- 10%
- 10-14
- 20%
- 10-20
- 50%
- 10-31
- 80%
- 11-08
- 90%
- 11-14
Growing season length (days, 28°F threshold)
- Short year
- 167
- Median
- 203
- Long year
- 233
Source NOAA station
ANNEX CREEK, AK US
4.7 mi · 30 yrs of record (1991–2020) · 92 ft elev.
Data from ANNEX CREEK, AK US, 4.7 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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