How many chill hours does 81657 get?

81657 averages 1108 chill hours per winter, ranging from 873 to 1489 across the last 10 years.

What hardiness zone is 81657?

81657 is in USDA hardiness zone 5b.

Location almanac

The short answer

81657 averages 1,108 chill hours per winter (873–1,489 across 10 years) in USDA zone 5b.

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 81657’s chill hours and zone:

Chill and zone requirements are comfortably met in 81657.

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How many chill hours does 81657 get?: 81657 averages 1108 chill hours per winter, ranging from 873 to 1489 across the last 10 years.
What hardiness zone is 81657?: 81657 is in USDA hardiness zone 5b.

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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