Cowlitz County, Washington · Frost dates
Cowlitz County frost dates.
First-frost, last-frost, and growing-season length for Cowlitz County, Washington. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 8b
32°F — light freeze
Last spring frost
- 10%
- 05-02
- 20%
- 04-26
- 50%
- 04-08
- 80%
- 03-21
- 90%
- 03-11
First fall frost
- 10%
- 10-17
- 20%
- 10-24
- 50%
- 11-05
- 80%
- 11-21
- 90%
- 11-28
28°F — killing freeze
Last spring freeze
- 10%
- 04-04
- 20%
- 03-27
- 50%
- 03-06
- 80%
- 02-17
- 90%
- 02-06
First fall freeze
- 10%
- 10-31
- 20%
- 11-07
- 50%
- 11-24
- 80%
- 12-10
- 90%
- 12-20
Growing season length (days, 28°F threshold)
- Short year
- 210
- Median
- 263
- Long year
- 317
Source NOAA station
LONGVIEW, WA US
11.8 mi · 30 yrs of record (1991–2020) · 12 ft elev.
Data from LONGVIEW, WA US, 11.8 miles away with 30-year NOAA record (1991-2020).
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