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Chill hours in 56253

The short answer

56253 averages 1,085 chill hours per winter (7351,327 across 10 years) in USDA zone 4b.
56253 climate
Average chill hours1,085 (735–1,327 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 22 – April 28
First fall frosttypically October 14 – November 7

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 56253’s chill hours and zone:

How many chill hours does 56253 get?
56253 averages 1085 chill hours per winter, ranging from 735 to 1327 across the last 10 years.
What hardiness zone is 56253?
56253 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