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Chill hours in 56219

The short answer

56219 averages 1,130 chill hours per winter (7081,373 across 10 years) in USDA zone 4b.
56219 climate
Average chill hours1,130 (708–1,373 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 23 – May 11
First fall frosttypically October 14 – 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 56219’s chill hours and zone:

How many chill hours does 56219 get?
56219 averages 1130 chill hours per winter, ranging from 708 to 1373 across the last 10 years.
What hardiness zone is 56219?
56219 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