How many chill hours does 97880 get?

97880 averages 1772 chill hours per winter, ranging from 1393 to 1996 across the last 10 years.

What hardiness zone is 97880?

97880 is in USDA hardiness zone 6b.

Location almanac

The short answer

97880 averages 1,772 chill hours per winter (1,393–1,996 across 10 years) in USDA zone 6b.

97880 climate
Average chill hours	1,772 (1,393–1,996 across 10 winters)
USDA hardiness zone	6b
Last spring frost	typically May 18 – June 17
First fall frost	typically September 23 – October 21

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 97880’s chill hours and zone:

Chill and zone requirements are comfortably met in 97880.

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How many chill hours does 97880 get?: 97880 averages 1772 chill hours per winter, ranging from 1393 to 1996 across the last 10 years.
What hardiness zone is 97880?: 97880 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