How many chill hours does 91105 get?

91105 averages 347 chill hours per winter, ranging from 196 to 650 across the last 10 years.

What hardiness zone is 91105?

91105 is in USDA hardiness zone 10a.

Location almanac

The short answer

91105 averages 347 chill hours per winter (196–650 across 10 years) in USDA zone 10a.

91105 climate
Average chill hours	347 (196–650 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 91105’s chill hours and zone:

Chill and zone requirements are comfortably met in 91105.

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 91105 get?: 91105 averages 347 chill hours per winter, ranging from 196 to 650 across the last 10 years.
What hardiness zone is 91105?: 91105 is in USDA hardiness zone 10a.

Growing fruit trees in 91105? Get a care calendar anchored to this exact climate, with email reminders.

[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