How many chill hours does 85550 get?

85550 averages 1158 chill hours per winter, ranging from 665 to 1574 across the last 10 years.

What hardiness zone is 85550?

85550 is in USDA hardiness zone 9a.

Location almanac

The short answer

85550 averages 1,158 chill hours per winter (665–1,574 across 10 years) in USDA zone 9a.

85550 climate
Average chill hours	1,158 (665–1,574 across 10 winters)
USDA hardiness zone	9a
Last spring frost	typically February 25 – April 5
First fall frost	typically November 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 85550’s chill hours and zone:

Chill and zone requirements are comfortably met in 85550.

Show 87 more good fit varieties

How many chill hours does 85550 get?: 85550 averages 1158 chill hours per winter, ranging from 665 to 1574 across the last 10 years.
What hardiness zone is 85550?: 85550 is in USDA hardiness zone 9a.

Growing fruit trees in 85550? 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