How many chill hours does 03223 get?

03223 averages 1464 chill hours per winter, ranging from 1211 to 1868 across the last 10 years.

What hardiness zone is 03223?

03223 is in USDA hardiness zone 5a.

Location almanac

The short answer

03223 averages 1,464 chill hours per winter (1,211–1,868 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 03223’s chill hours and zone:

Chill and zone requirements are comfortably met in 03223.

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How many chill hours does 03223 get?: 03223 averages 1464 chill hours per winter, ranging from 1211 to 1868 across the last 10 years.
What hardiness zone is 03223?: 03223 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