How many chill hours does 95023 get?

95023 averages 1039 chill hours per winter, ranging from 784 to 1571 across the last 10 years.

What hardiness zone is 95023?

95023 is in USDA hardiness zone 9b.

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The short answer

95023 averages 1,039 chill hours per winter (784–1,571 across 10 years) in USDA zone 9b.

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 95023’s chill hours and zone:

Chill and zone requirements are comfortably met in 95023.

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How many chill hours does 95023 get?: 95023 averages 1039 chill hours per winter, ranging from 784 to 1571 across the last 10 years.
What hardiness zone is 95023?: 95023 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