How many chill hours does 78634 get?

78634 averages 562 chill hours per winter, ranging from 271 to 775 across the last 10 years.

What hardiness zone is 78634?

78634 is in USDA hardiness zone 9a.

Location almanac

The short answer

78634 averages 562 chill hours per winter (271–775 across 10 years) in USDA zone 9a.

78634 climate
Average chill hours	562 (271–775 across 10 winters)
USDA hardiness zone	9a
Last spring frost	typically January 23 – March 6
First fall frost	typically November 1 – December 18

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 78634’s chill hours and zone:

Chill and zone requirements are comfortably met in 78634.

Show 48 more good fit varieties

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

How many chill hours does 78634 get?: 78634 averages 562 chill hours per winter, ranging from 271 to 775 across the last 10 years.
What hardiness zone is 78634?: 78634 is in USDA hardiness zone 9a.

Growing fruit trees in 78634? 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