How many chill hours does 97720 get?

97720 averages 1749 chill hours per winter, ranging from 1152 to 2166 across the last 10 years.

What hardiness zone is 97720?

97720 is in USDA hardiness zone 6a.

Location almanac

The short answer

97720 averages 1,749 chill hours per winter (1,152–2,166 across 10 years) in USDA zone 6a.

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 97720’s chill hours and zone:

Chill and zone requirements are comfortably met in 97720.

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How many chill hours does 97720 get?: 97720 averages 1749 chill hours per winter, ranging from 1152 to 2166 across the last 10 years.
What hardiness zone is 97720?: 97720 is in USDA hardiness zone 6a.

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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