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Chill hours in 56653

The short answer

56653 averages 962 chill hours per winter (7251,224 across 10 years) in USDA zone 3b.
56653 climate
Average chill hours962 (725–1,224 across 10 winters)
USDA hardiness zone3b
Last spring frosttypically April 30 – May 19
First fall frosttypically September 29 – October 28

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 56653’s chill hours and zone:

How many chill hours does 56653 get?
56653 averages 962 chill hours per winter, ranging from 725 to 1224 across the last 10 years.
What hardiness zone is 56653?
56653 is in USDA hardiness zone 3b.

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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