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Chill hours in 56727

The short answer

56727 averages 948 chill hours per winter (7001,255 across 10 years) in USDA zone 3b.
56727 climate
Average chill hours948 (700–1,255 across 10 winters)
USDA hardiness zone3b
Last spring frosttypically April 29 – May 19
First fall frosttypically October 3 – October 16

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 56727’s chill hours and zone:

How many chill hours does 56727 get?
56727 averages 948 chill hours per winter, ranging from 700 to 1255 across the last 10 years.
What hardiness zone is 56727?
56727 is in USDA hardiness zone 3b.

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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