How many chill hours does 01521 get?

01521 averages 1574 chill hours per winter, ranging from 1330 to 1824 across the last 10 years.

What hardiness zone is 01521?

01521 is in USDA hardiness zone 6a.

Location almanac

The short answer

01521 averages 1,574 chill hours per winter (1,330–1,824 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 01521’s chill hours and zone:

Chill and zone requirements are comfortably met in 01521.

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How many chill hours does 01521 get?: 01521 averages 1574 chill hours per winter, ranging from 1330 to 1824 across the last 10 years.
What hardiness zone is 01521?: 01521 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