How many chill hours does 97118 get?

97118 averages 1568 chill hours per winter, ranging from 1225 to 2062 across the last 10 years.

What hardiness zone is 97118?

97118 is in USDA hardiness zone 9a.

Location almanac

The short answer

97118 averages 1,568 chill hours per winter (1,225–2,062 across 10 years) in USDA zone 9a.

97118 climate
Average chill hours	1,568 (1,225–2,062 across 10 winters)
USDA hardiness zone	9a
Last spring frost	typically January 31 – April 14
First fall frost	typically November 29 – December 25

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 97118’s chill hours and zone:

Chill and zone requirements are comfortably met in 97118.

Show 87 more good fit varieties

How many chill hours does 97118 get?: 97118 averages 1568 chill hours per winter, ranging from 1225 to 2062 across the last 10 years.
What hardiness zone is 97118?: 97118 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