How many chill hours does 85298 get?

85298 averages 482 chill hours per winter, ranging from 292 to 703 across the last 10 years.

What hardiness zone is 85298?

85298 is in USDA hardiness zone 9b.

Location almanac

The short answer

85298 averages 482 chill hours per winter (292–703 across 10 years) in USDA zone 9b.

85298 climate
Average chill hours	482 (292–703 across 10 winters)
USDA hardiness zone	9b
Last spring frost	typically January 4 – February 16
First fall frost	typically November 30 – December 29

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 85298’s chill hours and zone:

Chill and zone requirements are comfortably met in 85298.

Show 36 more good fit varieties

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

How many chill hours does 85298 get?: 85298 averages 482 chill hours per winter, ranging from 292 to 703 across the last 10 years.
What hardiness zone is 85298?: 85298 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