How many chill hours does 90805 get?

90805 averages 238 chill hours per winter, ranging from 80 to 455 across the last 10 years.

What hardiness zone is 90805?

90805 is in USDA hardiness zone 10b.

Location almanac

The short answer

90805 averages 238 chill hours per winter (80–455 across 10 years) in USDA zone 10b.

90805 climate
Average chill hours	238 (80–455 across 10 winters)
USDA hardiness zone	10b

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 90805’s chill hours and zone:

Chill and zone requirements are comfortably met in 90805.

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

How many chill hours does 90805 get?: 90805 averages 238 chill hours per winter, ranging from 80 to 455 across the last 10 years.
What hardiness zone is 90805?: 90805 is in USDA hardiness zone 10b.

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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