Chelan County, Washington · Frost dates
Chelan County frost dates.
First-frost, last-frost, and growing-season length for Chelan County, Washington. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 8b
32°F — light freeze
Last spring frost
- 10%
- 06-13
- 20%
- 06-05
- 50%
- 05-22
- 80%
- 05-09
- 90%
- 05-02
First fall frost
- 10%
- 09-07
- 20%
- 09-12
- 50%
- 09-22
- 80%
- 09-30
- 90%
- 10-04
28°F — killing freeze
Last spring freeze
- 10%
- 05-20
- 20%
- 05-14
- 50%
- 05-03
- 80%
- 04-24
- 90%
- 04-19
First fall freeze
- 10%
- 09-22
- 20%
- 09-27
- 50%
- 10-04
- 80%
- 10-15
- 90%
- 10-20
Growing season length (days, 28°F threshold)
- Short year
- 125
- Median
- 154
- Long year
- 184
Source NOAA station
PLAIN, WA US
5.4 mi · 30 yrs of record (1991–2020) · 1936 ft elev.
Data from PLAIN, WA US, 5.4 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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