How many chill hours does 56668 get?

56668 averages 946 chill hours per winter, ranging from 664 to 1225 across the last 10 years.

What hardiness zone is 56668?

56668 is in USDA hardiness zone 3a.

Location almanac

The short answer

56668 averages 946 chill hours per winter (664–1,225 across 10 years) in USDA zone 3a.

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 56668’s chill hours and zone:

Chill and zone requirements are comfortably met in 56668.

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How many chill hours does 56668 get?: 56668 averages 946 chill hours per winter, ranging from 664 to 1225 across the last 10 years.
What hardiness zone is 56668?: 56668 is in USDA hardiness zone 3a.

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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