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Chill hours in 56356

The short answer

56356 averages 1,098 chill hours per winter (8151,451 across 10 years) in USDA zone 4a.
56356 climate
Average chill hours1,098 (815–1,451 across 10 winters)
USDA hardiness zone4a
Last spring frosttypically April 22 – April 29
First fall frosttypically October 14 – 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 56356’s chill hours and zone:

How many chill hours does 56356 get?
56356 averages 1098 chill hours per winter, ranging from 815 to 1451 across the last 10 years.
What hardiness zone is 56356?
56356 is in USDA hardiness zone 4a.

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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