How many chill hours does 78663 get?

78663 averages 587 chill hours per winter, ranging from 298 to 838 across the last 10 years.

What hardiness zone is 78663?

78663 is in USDA hardiness zone 8b.

Location almanac

The short answer

78663 averages 587 chill hours per winter (298–838 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 78663’s chill hours and zone:

Chill and zone requirements are comfortably met in 78663.

Show 71 more good fit varieties

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

Show 22 more marginal varieties

How many chill hours does 78663 get?: 78663 averages 587 chill hours per winter, ranging from 298 to 838 across the last 10 years.
What hardiness zone is 78663?: 78663 is in USDA hardiness zone 8b.

Growing fruit trees in 78663? Get a care calendar anchored to this exact climate, with email reminders.

[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