How many chill hours does 57231 get?

57231 averages 1113 chill hours per winter, ranging from 692 to 1291 across the last 10 years.

What hardiness zone is 57231?

57231 is in USDA hardiness zone 4b.

Location almanac

The short answer

57231 averages 1,113 chill hours per winter (692–1,291 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 57231’s chill hours and zone:

Chill and zone requirements are comfortably met in 57231.

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How many chill hours does 57231 get?: 57231 averages 1113 chill hours per winter, ranging from 692 to 1291 across the last 10 years.
What hardiness zone is 57231?: 57231 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