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Chill hours in 56684

The short answer

56684 averages 965 chill hours per winter (7041,197 across 10 years) in USDA zone 3b.
56684 climate
Average chill hours965 (704–1,197 across 10 winters)
USDA hardiness zone3b
Last spring frosttypically April 25 – May 15
First fall frosttypically October 3 – October 21

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 56684’s chill hours and zone:

How many chill hours does 56684 get?
56684 averages 965 chill hours per winter, ranging from 704 to 1197 across the last 10 years.
What hardiness zone is 56684?
56684 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