Mendocino County, California · Frost dates
Mendocino County frost dates.
First-frost, last-frost, and growing-season length for Mendocino County, California. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 9b
32°F — light freeze
Last spring frost
- 10%
- 05-31
- 20%
- 05-23
- 50%
- 05-05
- 80%
- 04-21
- 90%
- 04-11
First fall frost
- 10%
- 09-24
- 20%
- 09-30
- 50%
- 10-09
- 80%
- 10-23
- 90%
- 10-31
28°F — killing freeze
Last spring freeze
- 10%
- 04-23
- 20%
- 04-15
- 50%
- 03-31
- 80%
- 03-05
- 90%
- 02-18
First fall freeze
- 10%
- 10-08
- 20%
- 10-14
- 50%
- 10-30
- 80%
- 11-18
- 90%
- 11-30
Growing season length (days, 28°F threshold)
- Short year
- 168
- Median
- 213
- Long year
- 285
Source NOAA station
WILLITS 1 NE, CA US
5.4 mi · 30 yrs of record (1991–2020) · 1353 ft elev.
Data from WILLITS 1 NE, CA US, 5.4 miles away with 30-year NOAA record (1991-2020).
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