How many chill hours does 46321 get?

46321 averages 1582 chill hours per winter, ranging from 1270 to 1922 across the last 10 years.

What hardiness zone is 46321?

46321 is in USDA hardiness zone 6a.

Location almanac

The short answer

46321 averages 1,582 chill hours per winter (1,270–1,922 across 10 years) in USDA zone 6a.

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 46321’s chill hours and zone:

Chill and zone requirements are comfortably met in 46321.

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How many chill hours does 46321 get?: 46321 averages 1582 chill hours per winter, ranging from 1270 to 1922 across the last 10 years.
What hardiness zone is 46321?: 46321 is in USDA hardiness zone 6a.

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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