How many chill hours does 95621 get?

95621 averages 1029 chill hours per winter, ranging from 870 to 1514 across the last 10 years.

What hardiness zone is 95621?

95621 is in USDA hardiness zone 9b.

Location almanac

The short answer

95621 averages 1,029 chill hours per winter (870–1,514 across 10 years) in USDA zone 9b.

95621 climate
Average chill hours	1,029 (870–1,514 across 10 winters)
USDA hardiness zone	9b
Last spring frost	typically January 6 – March 2
First fall frost	typically November 20 – December 18

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 95621’s chill hours and zone:

Chill and zone requirements are comfortably met in 95621.

Show 87 more good fit varieties

How many chill hours does 95621 get?: 95621 averages 1029 chill hours per winter, ranging from 870 to 1514 across the last 10 years.
What hardiness zone is 95621?: 95621 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