How many chill hours does 95004 get?

95004 averages 933 chill hours per winter, ranging from 748 to 1358 across the last 10 years.

What hardiness zone is 95004?

95004 is in USDA hardiness zone 9b.

Location almanac

The short answer

95004 averages 933 chill hours per winter (748–1,358 across 10 years) in USDA zone 9b.

95004 climate
Average chill hours	933 (748–1,358 across 10 winters)
USDA hardiness zone	9b
Last spring frost	typically January 3 – February 25
First fall frost	typically November 30 – December 22

Computed from 10 winters of ERA5 hourly temperature (Open-Meteo, 2015–2025); zones from USDA PHZM 2023. Data updated July 3, 2026. See methodology.

Every variety in our database, checked against 95004’s chill hours and zone:

Chill and zone requirements are comfortably met in 95004.

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How many chill hours does 95004 get?: 95004 averages 933 chill hours per winter, ranging from 748 to 1358 across the last 10 years.
What hardiness zone is 95004?: 95004 is in USDA hardiness zone 9b.

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[1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
[2] USDA / PRISM (Oregon State University). 2023 USDA Plant Hardiness Zone Map — accessed July 2026