How many chill hours does 54021 get?

54021 averages 1223 chill hours per winter, ranging from 1034 to 1514 across the last 10 years.

What hardiness zone is 54021?

54021 is in USDA hardiness zone 4b.

Location almanac

The short answer

54021 averages 1,223 chill hours per winter (1,034–1,514 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 54021’s chill hours and zone:

Chill and zone requirements are comfortably met in 54021.

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How many chill hours does 54021 get?: 54021 averages 1223 chill hours per winter, ranging from 1034 to 1514 across the last 10 years.
What hardiness zone is 54021?: 54021 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