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Chill hours in 56359

The short answer

56359 averages 1,046 chill hours per winter (8041,389 across 10 years) in USDA zone 4a.
56359 climate
Average chill hours1,046 (804–1,389 across 10 winters)
USDA hardiness zone4a
Last spring frosttypically April 25 – May 10
First fall frosttypically October 11 – November 19

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 56359’s chill hours and zone:

How many chill hours does 56359 get?
56359 averages 1046 chill hours per winter, ranging from 804 to 1389 across the last 10 years.
What hardiness zone is 56359?
56359 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