How many chill hours does 85357 get?

85357 averages 1359 chill hours per winter, ranging from 940 to 1808 across the last 10 years.

What hardiness zone is 85357?

85357 is in USDA hardiness zone 9a.

Location almanac

The short answer

85357 averages 1,359 chill hours per winter (940–1,808 across 10 years) in USDA zone 9a.

85357 climate
Average chill hours	1,359 (940–1,808 across 10 winters)
USDA hardiness zone	9a
Last spring frost	typically March 2 – April 5
First fall frost	typically November 4 – December 11

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 85357’s chill hours and zone:

Chill and zone requirements are comfortably met in 85357.

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How many chill hours does 85357 get?: 85357 averages 1359 chill hours per winter, ranging from 940 to 1808 across the last 10 years.
What hardiness zone is 85357?: 85357 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