How many chill hours does 66427 get?

66427 averages 1389 chill hours per winter, ranging from 1191 to 1713 across the last 10 years.

What hardiness zone is 66427?

66427 is in USDA hardiness zone 6a.

Location almanac

The short answer

66427 averages 1,389 chill hours per winter (1,191–1,713 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 66427’s chill hours and zone:

Chill and zone requirements are comfortably met in 66427.

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How many chill hours does 66427 get?: 66427 averages 1389 chill hours per winter, ranging from 1191 to 1713 across the last 10 years.
What hardiness zone is 66427?: 66427 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