How many chill hours does 54921 get?

54921 averages 1260 chill hours per winter, ranging from 1069 to 1560 across the last 10 years.

What hardiness zone is 54921?

54921 is in USDA hardiness zone 4b.

Location almanac

The short answer

54921 averages 1,260 chill hours per winter (1,069–1,560 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 54921’s chill hours and zone:

Chill and zone requirements are comfortably met in 54921.

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How many chill hours does 54921 get?: 54921 averages 1260 chill hours per winter, ranging from 1069 to 1560 across the last 10 years.
What hardiness zone is 54921?: 54921 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