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Chill hours in 54801

The short answer

54801 averages 1,143 chill hours per winter (9401,516 across 10 years) in USDA zone 4a.
54801 climate
Average chill hours1,143 (940–1,516 across 10 winters)
USDA hardiness zone4a
Last spring frosttypically April 25 – May 3
First fall frosttypically October 14 – November 14

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 54801’s chill hours and zone:

How many chill hours does 54801 get?
54801 averages 1143 chill hours per winter, ranging from 940 to 1516 across the last 10 years.
What hardiness zone is 54801?
54801 is in USDA hardiness zone 4a.

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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