How many chill hours does 66738 get?

66738 averages 1373 chill hours per winter, ranging from 1136 to 1704 across the last 10 years.

What hardiness zone is 66738?

66738 is in USDA hardiness zone 6b.

Location almanac

The short answer

66738 averages 1,373 chill hours per winter (1,136–1,704 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 66738’s chill hours and zone:

Chill and zone requirements are comfortably met in 66738.

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How many chill hours does 66738 get?: 66738 averages 1373 chill hours per winter, ranging from 1136 to 1704 across the last 10 years.
What hardiness zone is 66738?: 66738 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