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Chill hours in 54856

The short answer

54856 averages 1,130 chill hours per winter (8401,537 across 10 years) in USDA zone 4b.
54856 climate
Average chill hours1,130 (840–1,537 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically May 3 – May 13
First fall frosttypically October 11 – November 2

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 54856’s chill hours and zone:

How many chill hours does 54856 get?
54856 averages 1130 chill hours per winter, ranging from 840 to 1537 across the last 10 years.
What hardiness zone is 54856?
54856 is in USDA hardiness zone 4b.

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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