How many chill hours does 77058 get?

77058 averages 328 chill hours per winter, ranging from 141 to 446 across the last 10 years.

What hardiness zone is 77058?

77058 is in USDA hardiness zone 9b.

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The short answer

77058 averages 328 chill hours per winter (141–446 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 77058’s chill hours and zone:

Chill and zone requirements are comfortably met in 77058.

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

How many chill hours does 77058 get?: 77058 averages 328 chill hours per winter, ranging from 141 to 446 across the last 10 years.
What hardiness zone is 77058?: 77058 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