How many chill hours does 71730 get?

71730 averages 859 chill hours per winter, ranging from 585 to 1152 across the last 10 years.

What hardiness zone is 71730?

71730 is in USDA hardiness zone 8b.

Location almanac

The short answer

71730 averages 859 chill hours per winter (585–1,152 across 10 years) in USDA zone 8b.

71730 climate
Average chill hours	859 (585–1,152 across 10 winters)
USDA hardiness zone	8b
Last spring frost	typically February 10 – March 13
First fall frost	typically November 10 – December 10

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 71730’s chill hours and zone:

Chill and zone requirements are comfortably met in 71730.

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 71730 get?: 71730 averages 859 chill hours per winter, ranging from 585 to 1152 across the last 10 years.
What hardiness zone is 71730?: 71730 is in USDA hardiness zone 8b.

Growing fruit trees in 71730? 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