How many chill hours does 85637 get?

85637 averages 1295 chill hours per winter, ranging from 849 to 1650 across the last 10 years.

What hardiness zone is 85637?

85637 is in USDA hardiness zone 8a.

Location almanac

The short answer

85637 averages 1,295 chill hours per winter (849–1,650 across 10 years) in USDA zone 8a.

85637 climate
Average chill hours	1,295 (849–1,650 across 10 winters)
USDA hardiness zone	8a
Last spring frost	typically February 13 – March 29
First fall frost	typically November 4 – December 8

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 85637’s chill hours and zone:

Chill and zone requirements are comfortably met in 85637.

Show 129 more good fit varieties

How many chill hours does 85637 get?: 85637 averages 1295 chill hours per winter, ranging from 849 to 1650 across the last 10 years.
What hardiness zone is 85637?: 85637 is in USDA hardiness zone 8a.

Growing fruit trees in 85637? 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