How many chill hours does 78375 get?

78375 averages 203 chill hours per winter, ranging from 121 to 294 across the last 10 years.

What hardiness zone is 78375?

78375 is in USDA hardiness zone 9b.

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The short answer

78375 averages 203 chill hours per winter (121–294 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 78375’s chill hours and zone:

Chill and zone requirements are comfortably met in 78375.

Show 3 more good fit varieties

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

How many chill hours does 78375 get?: 78375 averages 203 chill hours per winter, ranging from 121 to 294 across the last 10 years.
What hardiness zone is 78375?: 78375 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