How many chill hours does 66440 get?

66440 averages 1409 chill hours per winter, ranging from 1222 to 1770 across the last 10 years.

What hardiness zone is 66440?

66440 is in USDA hardiness zone 6b.

Location almanac

The short answer

66440 averages 1,409 chill hours per winter (1,222–1,770 across 10 years) in USDA zone 6b.

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 66440’s chill hours and zone:

Chill and zone requirements are comfortably met in 66440.

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How many chill hours does 66440 get?: 66440 averages 1409 chill hours per winter, ranging from 1222 to 1770 across the last 10 years.
What hardiness zone is 66440?: 66440 is in USDA hardiness zone 6b.

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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