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Chill hours in 56548

The short answer

56548 averages 1,025 chill hours per winter (6921,316 across 10 years) in USDA zone 4a.
56548 climate
Average chill hours1,025 (692–1,316 across 10 winters)
USDA hardiness zone4a
Last spring frosttypically April 29 – May 15
First fall frosttypically October 5 – October 21

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 56548’s chill hours and zone:

How many chill hours does 56548 get?
56548 averages 1025 chill hours per winter, ranging from 692 to 1316 across the last 10 years.
What hardiness zone is 56548?
56548 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