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Chill hours in 56235

The short answer

56235 averages 1,056 chill hours per winter (6681,359 across 10 years) in USDA zone 4b.
56235 climate
Average chill hours1,056 (668–1,359 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 22 – May 10
First fall frosttypically October 10 – November 13

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 56235’s chill hours and zone:

How many chill hours does 56235 get?
56235 averages 1056 chill hours per winter, ranging from 668 to 1359 across the last 10 years.
What hardiness zone is 56235?
56235 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