How many chill hours does 78070 get?

78070 averages 547 chill hours per winter, ranging from 275 to 758 across the last 10 years.

What hardiness zone is 78070?

78070 is in USDA hardiness zone 8b.

Location almanac

The short answer

78070 averages 547 chill hours per winter (275–758 across 10 years) in USDA zone 8b.

78070 climate
Average chill hours	547 (275–758 across 10 winters)
USDA hardiness zone	8b
Last spring frost	typically January 11 – March 6
First fall frost	typically November 12 – December 19

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 78070’s chill hours and zone:

Chill and zone requirements are comfortably met in 78070.

Show 71 more good fit varieties

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

Show 2 more marginal varieties

How many chill hours does 78070 get?: 78070 averages 547 chill hours per winter, ranging from 275 to 758 across the last 10 years.
What hardiness zone is 78070?: 78070 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