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Chill hours in 56759

The short answer

56759 averages 926 chill hours per winter (6311,216 across 10 years) in USDA zone 3b.
56759 climate
Average chill hours926 (631–1,216 across 10 winters)
USDA hardiness zone3b
Last spring frosttypically May 1 – May 19
First fall frosttypically October 3 – 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 56759’s chill hours and zone:

How many chill hours does 56759 get?
56759 averages 926 chill hours per winter, ranging from 631 to 1216 across the last 10 years.
What hardiness zone is 56759?
56759 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