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Chill hours in 52165

The short answer

52165 averages 1,279 chill hours per winter (1,1291,508 across 10 years) in USDA zone 4b.
52165 climate
Average chill hours1,279 (1,129–1,508 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 25 – May 13
First fall frosttypically October 12 – October 28

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 52165’s chill hours and zone:

How many chill hours does 52165 get?
52165 averages 1279 chill hours per winter, ranging from 1129 to 1508 across the last 10 years.
What hardiness zone is 52165?
52165 is in USDA hardiness zone 4b.

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Sources

  1. [1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
  2. [2] USDA / PRISM (Oregon State University). 2023 USDA Plant Hardiness Zone Map — accessed July 2026