How many chill hours does 03561 get?

03561 averages 1165 chill hours per winter, ranging from 948 to 1589 across the last 10 years.

What hardiness zone is 03561?

03561 is in USDA hardiness zone 4b.

Location almanac

The short answer

03561 averages 1,165 chill hours per winter (948–1,589 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 03561’s chill hours and zone:

Chill and zone requirements are comfortably met in 03561.

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How many chill hours does 03561 get?: 03561 averages 1165 chill hours per winter, ranging from 948 to 1589 across the last 10 years.
What hardiness zone is 03561?: 03561 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