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Chill hours in 56732

The short answer

56732 averages 908 chill hours per winter (6021,225 across 10 years) in USDA zone 3b.
56732 climate
Average chill hours908 (602–1,225 across 10 winters)
USDA hardiness zone3b
Last spring frosttypically May 1 – May 19
First fall frosttypically October 4 – October 16

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 56732’s chill hours and zone:

How many chill hours does 56732 get?
56732 averages 908 chill hours per winter, ranging from 602 to 1225 across the last 10 years.
What hardiness zone is 56732?
56732 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