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Chill hours in 56676

The short answer

56676 averages 961 chill hours per winter (6961,237 across 10 years) in USDA zone 3b.
56676 climate
Average chill hours961 (696–1,237 across 10 winters)
USDA hardiness zone3b
Last spring frosttypically April 26 – May 13
First fall frosttypically October 7 – October 22

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 56676’s chill hours and zone:

How many chill hours does 56676 get?
56676 averages 961 chill hours per winter, ranging from 696 to 1237 across the last 10 years.
What hardiness zone is 56676?
56676 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