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Chill hours in 56153

The short answer

56153 averages 1,134 chill hours per winter (7521,292 across 10 years) in USDA zone 4b.
56153 climate
Average chill hours1,134 (752–1,292 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 22 – May 2
First fall frosttypically October 10 – October 27

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 56153’s chill hours and zone:

How many chill hours does 56153 get?
56153 averages 1134 chill hours per winter, ranging from 752 to 1292 across the last 10 years.
What hardiness zone is 56153?
56153 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