How many chill hours does 66220 get?

66220 averages 1436 chill hours per winter, ranging from 1227 to 1787 across the last 10 years.

What hardiness zone is 66220?

66220 is in USDA hardiness zone 6b.

Location almanac

The short answer

66220 averages 1,436 chill hours per winter (1,227–1,787 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 66220’s chill hours and zone:

Chill and zone requirements are comfortably met in 66220.

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How many chill hours does 66220 get?: 66220 averages 1436 chill hours per winter, ranging from 1227 to 1787 across the last 10 years.
What hardiness zone is 66220?: 66220 is in USDA hardiness zone 6b.

Growing fruit trees in 66220? Get a care calendar anchored to this exact climate, with email reminders.

[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