How many chill hours does 97447 get?

97447 averages 2116 chill hours per winter, ranging from 1790 to 2299 across the last 10 years.

What hardiness zone is 97447?

97447 is in USDA hardiness zone 8b.

Location almanac

The short answer

97447 averages 2,116 chill hours per winter (1,790–2,299 across 10 years) in USDA zone 8b.

97447 climate
Average chill hours	2,116 (1,790–2,299 across 10 winters)
USDA hardiness zone	8b
Last spring frost	typically May 3 – June 19
First fall frost	typically September 29 – October 27

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 97447’s chill hours and zone:

Chill and zone requirements are comfortably met in 97447.

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How many chill hours does 97447 get?: 97447 averages 2116 chill hours per winter, ranging from 1790 to 2299 across the last 10 years.
What hardiness zone is 97447?: 97447 is in USDA hardiness zone 8b.

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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