How many chill hours does 56231 get?

56231 averages 1079 chill hours per winter, ranging from 700 to 1324 across the last 10 years.

What hardiness zone is 56231?

56231 is in USDA hardiness zone 4b.

Location almanac

The short answer

56231 averages 1,079 chill hours per winter (700–1,324 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 56231’s chill hours and zone:

Chill and zone requirements are comfortably met in 56231.

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How many chill hours does 56231 get?: 56231 averages 1079 chill hours per winter, ranging from 700 to 1324 across the last 10 years.
What hardiness zone is 56231?: 56231 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