Wahkiakum County, Washington · Frost dates
Wahkiakum County frost dates.
First-frost, last-frost, and growing-season length for Wahkiakum County, Washington. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 8b
32°F — light freeze
Last spring frost
- 10%
- 05-18
- 20%
- 05-09
- 50%
- 04-27
- 80%
- 04-11
- 90%
- 04-02
First fall frost
- 10%
- 10-03
- 20%
- 10-08
- 50%
- 10-22
- 80%
- 11-03
- 90%
- 11-11
28°F — killing freeze
Last spring freeze
- 10%
- 04-20
- 20%
- 04-11
- 50%
- 03-25
- 80%
- 02-28
- 90%
- 02-20
First fall freeze
- 10%
- 10-22
- 20%
- 10-28
- 50%
- 11-12
- 80%
- 12-02
- 90%
- 12-16
Growing season length (days, 28°F threshold)
- Short year
- 185
- Median
- 232
- Long year
- 299
Source NOAA station
GRAYS RVR HATCHERY, WA US
9.1 mi · 30 yrs of record (1991–2020) · 100 ft elev.
Data from GRAYS RVR HATCHERY, WA US, 9.1 miles away with 30-year NOAA record (1991-2020).
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