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Chill hours in 56164

The short answer

56164 averages 1,113 chill hours per winter (7301,276 across 10 years) in USDA zone 4b.
56164 climate
Average chill hours1,113 (730–1,276 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 22 – May 6
First fall frosttypically October 10 – November 7

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 56164’s chill hours and zone:

How many chill hours does 56164 get?
56164 averages 1113 chill hours per winter, ranging from 730 to 1276 across the last 10 years.
What hardiness zone is 56164?
56164 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