How many chill hours does 85653 get?

85653 averages 448 chill hours per winter, ranging from 224 to 670 across the last 10 years.

What hardiness zone is 85653?

85653 is in USDA hardiness zone 9b.

Location almanac

The short answer

85653 averages 448 chill hours per winter (224–670 across 10 years) in USDA zone 9b.

85653 climate
Average chill hours	448 (224–670 across 10 winters)
USDA hardiness zone	9b
Last spring frost	typically January 12 – February 16
First fall frost	typically December 15 – 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 85653’s chill hours and zone:

Chill and zone requirements are comfortably met in 85653.

Show 34 more good fit varieties

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

How many chill hours does 85653 get?: 85653 averages 448 chill hours per winter, ranging from 224 to 670 across the last 10 years.
What hardiness zone is 85653?: 85653 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