How many chill hours does 97388 get?

97388 averages 1571 chill hours per winter, ranging from 1080 to 2171 across the last 10 years.

What hardiness zone is 97388?

97388 is in USDA hardiness zone 9b.

Location almanac

The short answer

97388 averages 1,571 chill hours per winter (1,080–2,171 across 10 years) in USDA zone 9b.

97388 climate
Average chill hours	1,571 (1,080–2,171 across 10 winters)
USDA hardiness zone	9b
Last spring frost	typically February 25 – March 8
First fall frost	typically November 29 – December 26

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 97388’s chill hours and zone:

Chill and zone requirements are comfortably met in 97388.

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How many chill hours does 97388 get?: 97388 averages 1571 chill hours per winter, ranging from 1080 to 2171 across the last 10 years.
What hardiness zone is 97388?: 97388 is in USDA hardiness zone 9b.

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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