How many chill hours does 91371 get?

91371 averages 388 chill hours per winter, ranging from 219 to 709 across the last 10 years.

What hardiness zone is 91371?

91371 is in USDA hardiness zone 9b.

Location almanac

The short answer

91371 averages 388 chill hours per winter (219–709 across 10 years) in USDA zone 9b.

91371 climate
Average chill hours	388 (219–709 across 10 winters)
USDA hardiness zone	9b

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 91371’s chill hours and zone:

Chill and zone requirements are comfortably met in 91371.

Show 26 more good fit varieties

Possible in a good year or a favorable microclimate — click through for the caveats.

Show 10 more marginal varieties

How many chill hours does 91371 get?: 91371 averages 388 chill hours per winter, ranging from 219 to 709 across the last 10 years.
What hardiness zone is 91371?: 91371 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