How many chill hours does 86438 get?

86438 averages 532 chill hours per winter, ranging from 266 to 892 across the last 10 years.

What hardiness zone is 86438?

86438 is in USDA hardiness zone 9a.

Location almanac

The short answer

86438 averages 532 chill hours per winter (266–892 across 10 years) in USDA zone 9a.

86438 climate
Average chill hours	532 (266–892 across 10 winters)
USDA hardiness zone	9a
Last spring frost	typically January 27 – February 24
First fall frost	typically November 28 – 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 86438’s chill hours and zone:

Chill and zone requirements are comfortably met in 86438.

Show 48 more good fit varieties

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

Show 7 more marginal varieties

How many chill hours does 86438 get?: 86438 averages 532 chill hours per winter, ranging from 266 to 892 across the last 10 years.
What hardiness zone is 86438?: 86438 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