How many chill hours does 70631 get?

70631 averages 296 chill hours per winter, ranging from 140 to 418 across the last 10 years.

What hardiness zone is 70631?

70631 is in USDA hardiness zone 9b.

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The short answer

70631 averages 296 chill hours per winter (140–418 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 70631’s chill hours and zone:

Chill and zone requirements are comfortably met in 70631.

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 70631 get?: 70631 averages 296 chill hours per winter, ranging from 140 to 418 across the last 10 years.
What hardiness zone is 70631?: 70631 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