How many chill hours does 95991 get?

95991 averages 1028 chill hours per winter, ranging from 811 to 1486 across the last 10 years.

What hardiness zone is 95991?

95991 is in USDA hardiness zone 9b.

Location almanac

The short answer

95991 averages 1,028 chill hours per winter (811–1,486 across 10 years) in USDA zone 9b.

95991 climate
Average chill hours	1,028 (811–1,486 across 10 winters)
USDA hardiness zone	9b
Last spring frost	typically January 3 – March 1
First fall frost	typically November 27 – December 25

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 95991’s chill hours and zone:

Chill and zone requirements are comfortably met in 95991.

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How many chill hours does 95991 get?: 95991 averages 1028 chill hours per winter, ranging from 811 to 1486 across the last 10 years.
What hardiness zone is 95991?: 95991 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