How many chill hours does 78374 get?

78374 averages 188 chill hours per winter, ranging from 63 to 284 across the last 10 years.

What hardiness zone is 78374?

78374 is in USDA hardiness zone 10a.

Location almanac

The short answer

78374 averages 188 chill hours per winter (63–284 across 10 years) in USDA zone 10a.

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 78374’s chill hours and zone:

Chill and zone requirements are comfortably met in 78374.

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

How many chill hours does 78374 get?: 78374 averages 188 chill hours per winter, ranging from 63 to 284 across the last 10 years.
What hardiness zone is 78374?: 78374 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