How many chill hours does 93304 get?

93304 averages 761 chill hours per winter, ranging from 548 to 1100 across the last 10 years.

What hardiness zone is 93304?

93304 is in USDA hardiness zone 9b.

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The short answer

93304 averages 761 chill hours per winter (548–1,100 across 10 years) in USDA zone 9b.

93304 climate
Average chill hours	761 (548–1,100 across 10 winters)
USDA hardiness zone	9b
First fall frost	typically November 28 – December 22

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 93304’s chill hours and zone:

Chill and zone requirements are comfortably met in 93304.

Show 74 more good fit varieties

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

How many chill hours does 93304 get?: 93304 averages 761 chill hours per winter, ranging from 548 to 1100 across the last 10 years.
What hardiness zone is 93304?: 93304 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