Santa Clara County, California · Frost dates
Santa Clara County frost dates.
First-frost, last-frost, and growing-season length for Santa Clara County, California. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 9b
32°F — light freeze
Last spring frost
- 10%
- 06-05
- 20%
- 05-26
- 50%
- 05-03
- 80%
- 04-17
- 90%
- 04-07
First fall frost
- 10%
- 10-22
- 20%
- 11-01
- 50%
- 11-18
- 80%
- 12-04
- 90%
- 12-12
28°F — killing freeze
Last spring freeze
- 10%
- 05-06
- 20%
- 04-29
- 50%
- 04-10
- 80%
- 03-14
- 90%
- 02-23
First fall freeze
- 10%
- 11-10
- 20%
- 11-20
- 50%
- 12-07
- 80%
- 01-01
- 90%
- 01-18
Growing season length (days, 28°F threshold)
- Short year
- 188
- Median
- 241
- Long year
- 329
Source NOAA station
MT HAMILTON, CA US
8.8 mi · 30 yrs of record (1991–2020) · 4206 ft elev.
Data from MT HAMILTON, CA US, 8.8 miles away with 30-year NOAA record (1991-2020).
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