How many chill hours does 92328 get?

92328 averages 185 chill hours per winter, ranging from 59 to 496 across the last 10 years.

What hardiness zone is 92328?

92328 is in USDA hardiness zone 9a.

Location almanac

The short answer

92328 averages 185 chill hours per winter (59–496 across 10 years) in USDA zone 9a.

92328 climate
Average chill hours	185 (59–496 across 10 winters)
USDA hardiness zone	9a

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 92328’s chill hours and zone:

Chill and zone requirements are comfortably met in 92328.

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

Show 11 more marginal varieties

How many chill hours does 92328 get?: 92328 averages 185 chill hours per winter, ranging from 59 to 496 across the last 10 years.
What hardiness zone is 92328?: 92328 is in USDA hardiness zone 9a.

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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