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Chill hours in 56711

The short answer

56711 averages 962 chill hours per winter (6691,301 across 10 years) in USDA zone 3b.
56711 climate
Average chill hours962 (669–1,301 across 10 winters)
USDA hardiness zone3b
Last spring frosttypically April 29 – May 15
First fall frosttypically October 4 – 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 56711’s chill hours and zone:

How many chill hours does 56711 get?
56711 averages 962 chill hours per winter, ranging from 669 to 1301 across the last 10 years.
What hardiness zone is 56711?
56711 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