How many chill hours does 45320 get?

45320 averages 1462 chill hours per winter, ranging from 1230 to 1675 across the last 10 years.

What hardiness zone is 45320?

45320 is in USDA hardiness zone 6a.

Location almanac

The short answer

45320 averages 1,462 chill hours per winter (1,230–1,675 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 45320’s chill hours and zone:

Chill and zone requirements are comfortably met in 45320.

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How many chill hours does 45320 get?: 45320 averages 1462 chill hours per winter, ranging from 1230 to 1675 across the last 10 years.
What hardiness zone is 45320?: 45320 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