How many chill hours does 97218 get?

97218 averages 2211 chill hours per winter, ranging from 1862 to 2651 across the last 10 years.

What hardiness zone is 97218?

97218 is in USDA hardiness zone 9a.

Location almanac

The short answer

97218 averages 2,211 chill hours per winter (1,862–2,651 across 10 years) in USDA zone 9a.

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 97218’s chill hours and zone:

Chill and zone requirements are comfortably met in 97218.

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How many chill hours does 97218 get?: 97218 averages 2211 chill hours per winter, ranging from 1862 to 2651 across the last 10 years.
What hardiness zone is 97218?: 97218 is in USDA hardiness zone 9a.

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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