How many chill hours does 15223 get?

15223 averages 1576 chill hours per winter, ranging from 1313 to 1877 across the last 10 years.

What hardiness zone is 15223?

15223 is in USDA hardiness zone 6b.

Location almanac

The short answer

15223 averages 1,576 chill hours per winter (1,313–1,877 across 10 years) in USDA zone 6b.

15223 climate
Average chill hours	1,576 (1,313–1,877 across 10 winters)
USDA hardiness zone	6b
Last spring frost	typically April 8 – April 29
First fall frost	typically November 1 – November 14

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 15223’s chill hours and zone:

Chill and zone requirements are comfortably met in 15223.

Show 126 more good fit varieties

How many chill hours does 15223 get?: 15223 averages 1576 chill hours per winter, ranging from 1313 to 1877 across the last 10 years.
What hardiness zone is 15223?: 15223 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