How many chill hours does 85618 get?

85618 averages 715 chill hours per winter, ranging from 382 to 954 across the last 10 years.

What hardiness zone is 85618?

85618 is in USDA hardiness zone 9a.

Location almanac

The short answer

85618 averages 715 chill hours per winter (382–954 across 10 years) in USDA zone 9a.

85618 climate
Average chill hours	715 (382–954 across 10 winters)
USDA hardiness zone	9a
Last spring frost	typically January 28 – February 24
First fall frost	typically December 2 – 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 85618’s chill hours and zone:

Chill and zone requirements are comfortably met in 85618.

Show 66 more good fit varieties

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

How many chill hours does 85618 get?: 85618 averages 715 chill hours per winter, ranging from 382 to 954 across the last 10 years.
What hardiness zone is 85618?: 85618 is in USDA hardiness zone 9a.

Growing fruit trees in 85618? 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