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Chill hours in 56368

The short answer

56368 averages 1,098 chill hours per winter (7961,431 across 10 years) in USDA zone 4b.
56368 climate
Average chill hours1,098 (796–1,431 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 22 – May 11
First fall frosttypically October 14 – 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 56368’s chill hours and zone:

How many chill hours does 56368 get?
56368 averages 1098 chill hours per winter, ranging from 796 to 1431 across the last 10 years.
What hardiness zone is 56368?
56368 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