How many chill hours does 95237 get?

95237 averages 1045 chill hours per winter, ranging from 768 to 1468 across the last 10 years.

What hardiness zone is 95237?

95237 is in USDA hardiness zone 9b.

Location almanac

The short answer

95237 averages 1,045 chill hours per winter (768–1,468 across 10 years) in USDA zone 9b.

95237 climate
Average chill hours	1,045 (768–1,468 across 10 winters)
USDA hardiness zone	9b
Last spring frost	typically January 8 – February 26
First fall frost	typically November 28 – December 20

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 95237’s chill hours and zone:

Chill and zone requirements are comfortably met in 95237.

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How many chill hours does 95237 get?: 95237 averages 1045 chill hours per winter, ranging from 768 to 1468 across the last 10 years.
What hardiness zone is 95237?: 95237 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