How many chill hours does 95305 get?

95305 averages 1599 chill hours per winter, ranging from 1430 to 1960 across the last 10 years.

What hardiness zone is 95305?

95305 is in USDA hardiness zone 9b.

Location almanac

The short answer

95305 averages 1,599 chill hours per winter (1,430–1,960 across 10 years) in USDA zone 9b.

95305 climate
Average chill hours	1,599 (1,430–1,960 across 10 winters)
USDA hardiness zone	9b
Last spring frost	typically March 1 – April 7
First fall frost	typically November 10 – December 21

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 95305’s chill hours and zone:

Chill and zone requirements are comfortably met in 95305.

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How many chill hours does 95305 get?: 95305 averages 1599 chill hours per winter, ranging from 1430 to 1960 across the last 10 years.
What hardiness zone is 95305?: 95305 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