How many chill hours does 91042 get?

91042 averages 1109 chill hours per winter, ranging from 653 to 1762 across the last 10 years.

What hardiness zone is 91042?

91042 is in USDA hardiness zone 10a.

Location almanac

The short answer

91042 averages 1,109 chill hours per winter (653–1,762 across 10 years) in USDA zone 10a.

91042 climate
Average chill hours	1,109 (653–1,762 across 10 winters)
USDA hardiness zone	10a
Last spring frost	typically February 4 – April 4
First fall frost	typically November 28 – December 18

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 91042’s chill hours and zone:

Chill and zone requirements are comfortably met in 91042.

Show 45 more good fit varieties

How many chill hours does 91042 get?: 91042 averages 1109 chill hours per winter, ranging from 653 to 1762 across the last 10 years.
What hardiness zone is 91042?: 91042 is in USDA hardiness zone 10a.

Growing fruit trees in 91042? 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