How many chill hours does 78005 get?

78005 averages 351 chill hours per winter, ranging from 187 to 447 across the last 10 years.

What hardiness zone is 78005?

78005 is in USDA hardiness zone 9a.

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The short answer

78005 averages 351 chill hours per winter (187–447 across 10 years) in USDA zone 9a.

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 78005’s chill hours and zone:

Chill and zone requirements are comfortably met in 78005.

Show 26 more good fit varieties

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

How many chill hours does 78005 get?: 78005 averages 351 chill hours per winter, ranging from 187 to 447 across the last 10 years.
What hardiness zone is 78005?: 78005 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