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Chill hours in 54830

The short answer

54830 averages 1,131 chill hours per winter (8951,489 across 10 years) in USDA zone 4a.
54830 climate
Average chill hours1,131 (895–1,489 across 10 winters)
USDA hardiness zone4a
Last spring frosttypically April 26 – May 13
First fall frosttypically October 10 – October 22

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 54830’s chill hours and zone:

How many chill hours does 54830 get?
54830 averages 1131 chill hours per winter, ranging from 895 to 1489 across the last 10 years.
What hardiness zone is 54830?
54830 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