How many chill hours does 85551 get?

85551 averages 836 chill hours per winter, ranging from 605 to 1080 across the last 10 years.

What hardiness zone is 85551?

85551 is in USDA hardiness zone 8b.

Location almanac

The short answer

85551 averages 836 chill hours per winter (605–1,080 across 10 years) in USDA zone 8b.

85551 climate
Average chill hours	836 (605–1,080 across 10 winters)
USDA hardiness zone	8b
Last spring frost	typically January 24 – February 26
First fall frost	typically December 8 – December 17

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 85551’s chill hours and zone:

Chill and zone requirements are comfortably met in 85551.

Show 123 more good fit varieties

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

How many chill hours does 85551 get?: 85551 averages 836 chill hours per winter, ranging from 605 to 1080 across the last 10 years.
What hardiness zone is 85551?: 85551 is in USDA hardiness zone 8b.

Growing fruit trees in 85551? Get a care calendar anchored to this exact climate, with email reminders.

[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