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Chill hours in 56466

The short answer

56466 averages 1,036 chill hours per winter (7651,386 across 10 years) in USDA zone 4a.
56466 climate
Average chill hours1,036 (765–1,386 across 10 winters)
USDA hardiness zone4a
Last spring frosttypically April 26 – May 13
First fall frosttypically October 5 – 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 56466’s chill hours and zone:

How many chill hours does 56466 get?
56466 averages 1036 chill hours per winter, ranging from 765 to 1386 across the last 10 years.
What hardiness zone is 56466?
56466 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