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Chill hours in 52163

The short answer

52163 averages 1,269 chill hours per winter (1,1261,488 across 10 years) in USDA zone 4b.
52163 climate
Average chill hours1,269 (1,126–1,488 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 23 – May 13
First fall frosttypically October 12 – October 27

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 52163’s chill hours and zone:

How many chill hours does 52163 get?
52163 averages 1269 chill hours per winter, ranging from 1126 to 1488 across the last 10 years.
What hardiness zone is 52163?
52163 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