How many chill hours does 95703 get?

95703 averages 1628 chill hours per winter, ranging from 1430 to 1984 across the last 10 years.

What hardiness zone is 95703?

95703 is in USDA hardiness zone 9a.

Location almanac

The short answer

95703 averages 1,628 chill hours per winter (1,430–1,984 across 10 years) in USDA zone 9a.

95703 climate
Average chill hours	1,628 (1,430–1,984 across 10 winters)
USDA hardiness zone	9a
Last spring frost	typically February 3 – April 19
First fall frost	typically November 10 – December 10

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 95703’s chill hours and zone:

Chill and zone requirements are comfortably met in 95703.

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How many chill hours does 95703 get?: 95703 averages 1628 chill hours per winter, ranging from 1430 to 1984 across the last 10 years.
What hardiness zone is 95703?: 95703 is in USDA hardiness zone 9a.

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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