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Chill hours in 54839

The short answer

54839 averages 1,108 chill hours per winter (8321,544 across 10 years) in USDA zone 4b.
54839 climate
Average chill hours1,108 (832–1,544 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 29 – May 16
First fall frosttypically October 11 – 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 54839’s chill hours and zone:

How many chill hours does 54839 get?
54839 averages 1108 chill hours per winter, ranging from 832 to 1544 across the last 10 years.
What hardiness zone is 54839?
54839 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