How many chill hours does 92220 get?

92220 averages 702 chill hours per winter, ranging from 399 to 1209 across the last 10 years.

What hardiness zone is 92220?

92220 is in USDA hardiness zone 9b.

Location almanac

The short answer

92220 averages 702 chill hours per winter (399–1,209 across 10 years) in USDA zone 9b.

92220 climate
Average chill hours	702 (399–1,209 across 10 winters)
USDA hardiness zone	9b
Last spring frost	typically January 8 – February 28
First fall frost	typically November 30 – December 28

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 92220’s chill hours and zone:

Chill and zone requirements are comfortably met in 92220.

Show 66 more good fit varieties

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

How many chill hours does 92220 get?: 92220 averages 702 chill hours per winter, ranging from 399 to 1209 across the last 10 years.
What hardiness zone is 92220?: 92220 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