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Chill hours in 56461

The short answer

56461 averages 981 chill hours per winter (7121,270 across 10 years) in USDA zone 3b.
56461 climate
Average chill hours981 (712–1,270 across 10 winters)
USDA hardiness zone3b
Last spring frosttypically April 26 – May 13
First fall frosttypically October 12 – November 1

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 56461’s chill hours and zone:

How many chill hours does 56461 get?
56461 averages 981 chill hours per winter, ranging from 712 to 1270 across the last 10 years.
What hardiness zone is 56461?
56461 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