How many chill hours does 91207 get?

91207 averages 308 chill hours per winter, ranging from 168 to 585 across the last 10 years.

What hardiness zone is 91207?

91207 is in USDA hardiness zone 10a.

Location almanac

The short answer

91207 averages 308 chill hours per winter (168–585 across 10 years) in USDA zone 10a.

91207 climate
Average chill hours	308 (168–585 across 10 winters)
USDA hardiness zone	10a

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 91207’s chill hours and zone:

Chill and zone requirements are comfortably met in 91207.

Show 12 more good fit varieties

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

How many chill hours does 91207 get?: 91207 averages 308 chill hours per winter, ranging from 168 to 585 across the last 10 years.
What hardiness zone is 91207?: 91207 is in USDA hardiness zone 10a.

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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