How many chill hours does 95231 get?

95231 averages 963 chill hours per winter, ranging from 761 to 1444 across the last 10 years.

What hardiness zone is 95231?

95231 is in USDA hardiness zone 9b.

Location almanac

The short answer

95231 averages 963 chill hours per winter (761–1,444 across 10 years) in USDA zone 9b.

95231 climate
Average chill hours	963 (761–1,444 across 10 winters)
USDA hardiness zone	9b
Last spring frost	typically January 3 – February 24
First fall frost	typically November 27 – December 28

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 95231’s chill hours and zone:

Chill and zone requirements are comfortably met in 95231.

Show 87 more good fit varieties

How many chill hours does 95231 get?: 95231 averages 963 chill hours per winter, ranging from 761 to 1444 across the last 10 years.
What hardiness zone is 95231?: 95231 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