How many chill hours does 95451 get?

95451 averages 1596 chill hours per winter, ranging from 1197 to 2186 across the last 10 years.

What hardiness zone is 95451?

95451 is in USDA hardiness zone 9b.

Location almanac

The short answer

95451 averages 1,596 chill hours per winter (1,197–2,186 across 10 years) in USDA zone 9b.

95451 climate
Average chill hours	1,596 (1,197–2,186 across 10 winters)
USDA hardiness zone	9b
Last spring frost	typically February 1 – April 5
First fall frost	typically November 25 – 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 95451’s chill hours and zone:

Chill and zone requirements are comfortably met in 95451.

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How many chill hours does 95451 get?: 95451 averages 1596 chill hours per winter, ranging from 1197 to 2186 across the last 10 years.
What hardiness zone is 95451?: 95451 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