How many chill hours does 78851 get?

78851 averages 640 chill hours per winter, ranging from 402 to 857 across the last 10 years.

What hardiness zone is 78851?

78851 is in USDA hardiness zone 8b.

Location almanac

The short answer

78851 averages 640 chill hours per winter (402–857 across 10 years) in USDA zone 8b.

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 78851’s chill hours and zone:

Chill and zone requirements are comfortably met in 78851.

Show 78 more good fit varieties

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

Show 15 more marginal varieties

How many chill hours does 78851 get?: 78851 averages 640 chill hours per winter, ranging from 402 to 857 across the last 10 years.
What hardiness zone is 78851?: 78851 is in USDA hardiness zone 8b.

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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