How many chill hours does 77978 get?

77978 averages 250 chill hours per winter, ranging from 108 to 350 across the last 10 years.

What hardiness zone is 77978?

77978 is in USDA hardiness zone 9b.

Location almanac

The short answer

77978 averages 250 chill hours per winter (108–350 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 77978’s chill hours and zone:

Chill and zone requirements are comfortably met in 77978.

Show 13 more good fit varieties

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

How many chill hours does 77978 get?: 77978 averages 250 chill hours per winter, ranging from 108 to 350 across the last 10 years.
What hardiness zone is 77978?: 77978 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