How many chill hours does 85623 get?

85623 averages 996 chill hours per winter, ranging from 580 to 1354 across the last 10 years.

What hardiness zone is 85623?

85623 is in USDA hardiness zone 9a.

Location almanac

The short answer

85623 averages 996 chill hours per winter (580–1,354 across 10 years) in USDA zone 9a.

85623 climate
Average chill hours	996 (580–1,354 across 10 winters)
USDA hardiness zone	9a
Last spring frost	typically February 12 – March 15
First fall frost	typically November 17 – 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 85623’s chill hours and zone:

Chill and zone requirements are comfortably met in 85623.

Show 87 more good fit varieties

How many chill hours does 85623 get?: 85623 averages 996 chill hours per winter, ranging from 580 to 1354 across the last 10 years.
What hardiness zone is 85623?: 85623 is in USDA hardiness zone 9a.

Growing fruit trees in 85623? 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