How many chill hours does 66543 get?

66543 averages 1417 chill hours per winter, ranging from 1215 to 1765 across the last 10 years.

What hardiness zone is 66543?

66543 is in USDA hardiness zone 6b.

Location almanac

The short answer

66543 averages 1,417 chill hours per winter (1,215–1,765 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 66543’s chill hours and zone:

Chill and zone requirements are comfortably met in 66543.

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How many chill hours does 66543 get?: 66543 averages 1417 chill hours per winter, ranging from 1215 to 1765 across the last 10 years.
What hardiness zone is 66543?: 66543 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