How many chill hours does 78563 get?

78563 averages 172 chill hours per winter, ranging from 98 to 256 across the last 10 years.

What hardiness zone is 78563?

78563 is in USDA hardiness zone 9b.

Location almanac

The short answer

78563 averages 172 chill hours per winter (98–256 across 10 years) in USDA zone 9b.

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 78563’s chill hours and zone:

Chill and zone requirements are comfortably met in 78563.

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

How many chill hours does 78563 get?: 78563 averages 172 chill hours per winter, ranging from 98 to 256 across the last 10 years.
What hardiness zone is 78563?: 78563 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