How many chill hours does 85755 get?

85755 averages 488 chill hours per winter, ranging from 242 to 818 across the last 10 years.

What hardiness zone is 85755?

85755 is in USDA hardiness zone 9a.

Location almanac

The short answer

85755 averages 488 chill hours per winter (242–818 across 10 years) in USDA zone 9a.

85755 climate
Average chill hours	488 (242–818 across 10 winters)
USDA hardiness zone	9a
Last spring frost	typically January 27 – February 24
First fall frost	typically November 30 – 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 85755’s chill hours and zone:

Chill and zone requirements are comfortably met in 85755.

Show 36 more good fit varieties

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

Show 19 more marginal varieties

How many chill hours does 85755 get?: 85755 averages 488 chill hours per winter, ranging from 242 to 818 across the last 10 years.
What hardiness zone is 85755?: 85755 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