How many chill hours does 81323 get?

81323 averages 889 chill hours per winter, ranging from 638 to 1099 across the last 10 years.

What hardiness zone is 81323?

81323 is in USDA hardiness zone 6a.

Location almanac

The short answer

81323 averages 889 chill hours per winter (638–1,099 across 10 years) in USDA zone 6a.

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 81323’s chill hours and zone:

Chill and zone requirements are comfortably met in 81323.

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

How many chill hours does 81323 get?: 81323 averages 889 chill hours per winter, ranging from 638 to 1099 across the last 10 years.
What hardiness zone is 81323?: 81323 is in USDA hardiness zone 6a.

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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