How many chill hours does 89128 get?

89128 averages 767 chill hours per winter, ranging from 420 to 1135 across the last 10 years.

What hardiness zone is 89128?

89128 is in USDA hardiness zone 9a.

Location almanac

The short answer

89128 averages 767 chill hours per winter (420–1,135 across 10 years) in USDA zone 9a.

89128 climate
Average chill hours	767 (420–1,135 across 10 winters)
USDA hardiness zone	9a
Last spring frost	typically January 13 – February 24
First fall frost	typically November 26 – December 22

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 89128’s chill hours and zone:

Chill and zone requirements are comfortably met in 89128.

Show 74 more good fit varieties

Possible in a good year or a favorable microclimate — click through for the caveats.

How many chill hours does 89128 get?: 89128 averages 767 chill hours per winter, ranging from 420 to 1135 across the last 10 years.
What hardiness zone is 89128?: 89128 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