How many chill hours does 97639 get?

97639 averages 1951 chill hours per winter, ranging from 1557 to 2166 across the last 10 years.

What hardiness zone is 97639?

97639 is in USDA hardiness zone 6a.

Location almanac

The short answer

97639 averages 1,951 chill hours per winter (1,557–2,166 across 10 years) in USDA zone 6a.

97639 climate
Average chill hours	1,951 (1,557–2,166 across 10 winters)
USDA hardiness zone	6a
Last spring frost	typically May 3 – June 18
First fall frost	typically September 22 – October 23

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 97639’s chill hours and zone:

Chill and zone requirements are comfortably met in 97639.

Show 126 more good fit varieties

How many chill hours does 97639 get?: 97639 averages 1951 chill hours per winter, ranging from 1557 to 2166 across the last 10 years.
What hardiness zone is 97639?: 97639 is in USDA hardiness zone 6a.

Growing fruit trees in 97639? 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