Pierce County, Washington · Frost dates
Pierce County frost dates.
First-frost, last-frost, and growing-season length for Pierce County, Washington. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 8b
32°F — light freeze
Last spring frost
- 10%
- 04-29
- 20%
- 04-24
- 50%
- 04-11
- 80%
- 03-30
- 90%
- 03-23
First fall frost
- 10%
- 10-13
- 20%
- 10-19
- 50%
- 10-30
- 80%
- 11-10
- 90%
- 11-17
28°F — killing freeze
Last spring freeze
- 10%
- 04-08
- 20%
- 04-01
- 50%
- 03-16
- 80%
- 02-27
- 90%
- 02-19
First fall freeze
- 10%
- 10-28
- 20%
- 11-01
- 50%
- 11-14
- 80%
- 11-30
- 90%
- 12-08
Growing season length (days, 28°F threshold)
- Short year
- 203
- Median
- 243
- Long year
- 292
Source NOAA station
MCMILLIN RSVR, WA US
7.6 mi · 30 yrs of record (1991–2020) · 579 ft elev.
Data from MCMILLIN RSVR, WA US, 7.6 miles away with 30-year NOAA record (1991-2020).
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