How many chill hours does 81211 get?

81211 averages 634 chill hours per winter, ranging from 526 to 788 across the last 10 years.

What hardiness zone is 81211?

81211 is in USDA hardiness zone 5b.

Location almanac

The short answer

81211 averages 634 chill hours per winter (526–788 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 81211’s chill hours and zone:

Chill and zone requirements are comfortably met in 81211.

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

How many chill hours does 81211 get?: 81211 averages 634 chill hours per winter, ranging from 526 to 788 across the last 10 years.
What hardiness zone is 81211?: 81211 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