How many chill hours does 63121 get?

63121 averages 1493 chill hours per winter, ranging from 1196 to 1764 across the last 10 years.

What hardiness zone is 63121?

63121 is in USDA hardiness zone 7a.

Location almanac

The short answer

63121 averages 1,493 chill hours per winter (1,196–1,764 across 10 years) in USDA zone 7a.

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 63121’s chill hours and zone:

Chill and zone requirements are comfortably met in 63121.

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How many chill hours does 63121 get?: 63121 averages 1493 chill hours per winter, ranging from 1196 to 1764 across the last 10 years.
What hardiness zone is 63121?: 63121 is in USDA hardiness zone 7a.

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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