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Chill hours in 56054

The short answer

56054 averages 1,129 chill hours per winter (8031,370 across 10 years) in USDA zone 4b.
56054 climate
Average chill hours1,129 (803–1,370 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 22 – May 10
First fall frosttypically October 14 – November 7

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 56054’s chill hours and zone:

How many chill hours does 56054 get?
56054 averages 1129 chill hours per winter, ranging from 803 to 1370 across the last 10 years.
What hardiness zone is 56054?
56054 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