How many chill hours does 97136 get?

97136 averages 1997 chill hours per winter, ranging from 1637 to 2514 across the last 10 years.

What hardiness zone is 97136?

97136 is in USDA hardiness zone 9a.

Location almanac

The short answer

97136 averages 1,997 chill hours per winter (1,637–2,514 across 10 years) in USDA zone 9a.

97136 climate
Average chill hours	1,997 (1,637–2,514 across 10 winters)
USDA hardiness zone	9a
Last spring frost	typically March 9 – April 14
First fall frost	typically November 10 – 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 97136’s chill hours and zone:

Chill and zone requirements are comfortably met in 97136.

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How many chill hours does 97136 get?: 97136 averages 1997 chill hours per winter, ranging from 1637 to 2514 across the last 10 years.
What hardiness zone is 97136?: 97136 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