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Chill hours in 56316

The short answer

56316 averages 1,073 chill hours per winter (7121,403 across 10 years) in USDA zone 4b.
56316 climate
Average chill hours1,073 (712–1,403 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 22 – May 10
First fall frosttypically October 5 – 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 56316’s chill hours and zone:

How many chill hours does 56316 get?
56316 averages 1073 chill hours per winter, ranging from 712 to 1403 across the last 10 years.
What hardiness zone is 56316?
56316 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