How many chill hours does 81401 get?

81401 averages 1430 chill hours per winter, ranging from 1096 to 1742 across the last 10 years.

What hardiness zone is 81401?

81401 is in USDA hardiness zone 6b.

Location almanac

The short answer

81401 averages 1,430 chill hours per winter (1,096–1,742 across 10 years) in USDA zone 6b.

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 81401’s chill hours and zone:

Chill and zone requirements are comfortably met in 81401.

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How many chill hours does 81401 get?: 81401 averages 1430 chill hours per winter, ranging from 1096 to 1742 across the last 10 years.
What hardiness zone is 81401?: 81401 is in USDA hardiness zone 6b.

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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