How many chill hours does 89158 get?

89158 averages 751 chill hours per winter, ranging from 433 to 1086 across the last 10 years.

What hardiness zone is 89158?

89158 is in USDA hardiness zone 9b.

Location almanac

The short answer

89158 averages 751 chill hours per winter (433–1,086 across 10 years) in USDA zone 9b.

89158 climate
Average chill hours	751 (433–1,086 across 10 winters)
USDA hardiness zone	9b
Last spring frost	typically January 12 – February 24
First fall frost	typically November 26 – December 19

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 89158’s chill hours and zone:

Chill and zone requirements are comfortably met in 89158.

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 89158 get?: 89158 averages 751 chill hours per winter, ranging from 433 to 1086 across the last 10 years.
What hardiness zone is 89158?: 89158 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