How many chill hours does 97709 get?

97709 averages 1672 chill hours per winter, ranging from 978 to 2012 across the last 10 years.

What hardiness zone is 97709?

97709 is in USDA hardiness zone 6b.

Location almanac

The short answer

97709 averages 1,672 chill hours per winter (978–2,012 across 10 years) in USDA zone 6b.

97709 climate
Average chill hours	1,672 (978–2,012 across 10 winters)
USDA hardiness zone	6b
Last spring frost	typically June 9 – June 24
First fall frost	typically September 21 – October 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 97709’s chill hours and zone:

Chill and zone requirements are comfortably met in 97709.

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How many chill hours does 97709 get?: 97709 averages 1672 chill hours per winter, ranging from 978 to 2012 across the last 10 years.
What hardiness zone is 97709?: 97709 is in USDA hardiness zone 6b.

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[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