Lewis County, Washington · Frost dates
Lewis County frost dates.
First-frost, last-frost, and growing-season length for Lewis County, Washington. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 8b
32°F — light freeze
Last spring frost
- 10%
- 05-08
- 20%
- 04-30
- 50%
- 04-07
- 80%
- 03-24
- 90%
- 03-16
First fall frost
- 10%
- 10-24
- 20%
- 10-30
- 50%
- 11-13
- 80%
- 11-27
- 90%
- 12-04
28°F — killing freeze
Last spring freeze
- 10%
- 04-02
- 20%
- 03-24
- 50%
- 03-06
- 80%
- 02-16
- 90%
- 01-31
First fall freeze
- 10%
- 11-08
- 20%
- 11-16
- 50%
- 12-01
- 80%
- 12-20
- 90%
- 01-01
Growing season length (days, 28°F threshold)
- Short year
- 220
- Median
- 270
- Long year
- 335
Source NOAA station
MAYFIELD PWR PLT, WA US
11.5 mi · 30 yrs of record (1991–2020) · 280 ft elev.
Data from MAYFIELD PWR PLT, WA US, 11.5 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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