How many chill hours does 57221 get?

57221 averages 1108 chill hours per winter, ranging from 674 to 1287 across the last 10 years.

What hardiness zone is 57221?

57221 is in USDA hardiness zone 4b.

Location almanac

The short answer

57221 averages 1,108 chill hours per winter (674–1,287 across 10 years) in USDA zone 4b.

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 57221’s chill hours and zone:

Chill and zone requirements are comfortably met in 57221.

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How many chill hours does 57221 get?: 57221 averages 1108 chill hours per winter, ranging from 674 to 1287 across the last 10 years.
What hardiness zone is 57221?: 57221 is in USDA hardiness zone 4b.

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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