How many chill hours does 45237 get?

45237 averages 1509 chill hours per winter, ranging from 1224 to 1853 across the last 10 years.

What hardiness zone is 45237?

45237 is in USDA hardiness zone 6b.

Location almanac

The short answer

45237 averages 1,509 chill hours per winter (1,224–1,853 across 10 years) in USDA zone 6b.

45237 climate
Average chill hours	1,509 (1,224–1,853 across 10 winters)
USDA hardiness zone	6b
Last spring frost	typically March 29 – April 22
First fall frost	typically November 1 – November 22

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 45237’s chill hours and zone:

Chill and zone requirements are comfortably met in 45237.

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How many chill hours does 45237 get?: 45237 averages 1509 chill hours per winter, ranging from 1224 to 1853 across the last 10 years.
What hardiness zone is 45237?: 45237 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