How many chill hours does 15546 get?

15546 averages 1492 chill hours per winter, ranging from 1264 to 1752 across the last 10 years.

What hardiness zone is 15546?

15546 is in USDA hardiness zone 6a.

Location almanac

The short answer

15546 averages 1,492 chill hours per winter (1,264–1,752 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 15546’s chill hours and zone:

Chill and zone requirements are comfortably met in 15546.

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How many chill hours does 15546 get?: 15546 averages 1492 chill hours per winter, ranging from 1264 to 1752 across the last 10 years.
What hardiness zone is 15546?: 15546 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