How many chill hours does 85042 get?

85042 averages 603 chill hours per winter, ranging from 372 to 890 across the last 10 years.

What hardiness zone is 85042?

85042 is in USDA hardiness zone 10a.

Location almanac

The short answer

85042 averages 603 chill hours per winter (372–890 across 10 years) in USDA zone 10a.

85042 climate
Average chill hours	603 (372–890 across 10 winters)
USDA hardiness zone	10a
Last spring frost	typically January 13 – February 26
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 85042’s chill hours and zone:

Chill and zone requirements are comfortably met in 85042.

Show 24 more good fit varieties

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

How many chill hours does 85042 get?: 85042 averages 603 chill hours per winter, ranging from 372 to 890 across the last 10 years.
What hardiness zone is 85042?: 85042 is in USDA hardiness zone 10a.

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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