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Chill hours in 56207

The short answer

56207 averages 1,085 chill hours per winter (6791,364 across 10 years) in USDA zone 4b.
56207 climate
Average chill hours1,085 (679–1,364 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 23 – May 10
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 56207’s chill hours and zone:

How many chill hours does 56207 get?
56207 averages 1085 chill hours per winter, ranging from 679 to 1364 across the last 10 years.
What hardiness zone is 56207?
56207 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