How many chill hours does 23147 get?

23147 averages 1393 chill hours per winter, ranging from 1108 to 1683 across the last 10 years.

What hardiness zone is 23147?

23147 is in USDA hardiness zone 7b.

Location almanac

The short answer

23147 averages 1,393 chill hours per winter (1,108–1,683 across 10 years) in USDA zone 7b.

23147 climate
Average chill hours	1,393 (1,108–1,683 across 10 winters)
USDA hardiness zone	7b
Last spring frost	typically March 9 – April 3
First fall frost	typically November 11 – December 1

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 23147’s chill hours and zone:

Chill and zone requirements are comfortably met in 23147.

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How many chill hours does 23147 get?: 23147 averages 1393 chill hours per winter, ranging from 1108 to 1683 across the last 10 years.
What hardiness zone is 23147?: 23147 is in USDA hardiness zone 7b.

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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