How many chill hours does 51510 get?

51510 averages 1371 chill hours per winter, ranging from 1115 to 1649 across the last 10 years.

What hardiness zone is 51510?

51510 is in USDA hardiness zone 6a.

Location almanac

The short answer

51510 averages 1,371 chill hours per winter (1,115–1,649 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 51510’s chill hours and zone:

Chill and zone requirements are comfortably met in 51510.

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How many chill hours does 51510 get?: 51510 averages 1371 chill hours per winter, ranging from 1115 to 1649 across the last 10 years.
What hardiness zone is 51510?: 51510 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