How many chill hours does 66501 get?

66501 averages 1389 chill hours per winter, ranging from 1185 to 1744 across the last 10 years.

What hardiness zone is 66501?

66501 is in USDA hardiness zone 6b.

Location almanac

The short answer

66501 averages 1,389 chill hours per winter (1,185–1,744 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 66501’s chill hours and zone:

Chill and zone requirements are comfortably met in 66501.

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How many chill hours does 66501 get?: 66501 averages 1389 chill hours per winter, ranging from 1185 to 1744 across the last 10 years.
What hardiness zone is 66501?: 66501 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