How many chill hours does 97223 get?

97223 averages 2135 chill hours per winter, ranging from 1874 to 2527 across the last 10 years.

What hardiness zone is 97223?

97223 is in USDA hardiness zone 9a.

Location almanac

The short answer

97223 averages 2,135 chill hours per winter (1,874–2,527 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 97223’s chill hours and zone:

Chill and zone requirements are comfortably met in 97223.

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How many chill hours does 97223 get?: 97223 averages 2135 chill hours per winter, ranging from 1874 to 2527 across the last 10 years.
What hardiness zone is 97223?: 97223 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