How many chill hours does 12821 get?

12821 averages 1532 chill hours per winter, ranging from 1242 to 1872 across the last 10 years.

What hardiness zone is 12821?

12821 is in USDA hardiness zone 5a.

Location almanac

The short answer

12821 averages 1,532 chill hours per winter (1,242–1,872 across 10 years) in USDA zone 5a.

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 12821’s chill hours and zone:

Chill and zone requirements are comfortably met in 12821.

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How many chill hours does 12821 get?: 12821 averages 1532 chill hours per winter, ranging from 1242 to 1872 across the last 10 years.
What hardiness zone is 12821?: 12821 is in USDA hardiness zone 5a.

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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