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Chill hours in 56215

The short answer

56215 averages 1,083 chill hours per winter (7201,332 across 10 years) in USDA zone 4b.
56215 climate
Average chill hours1,083 (720–1,332 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 22 – May 11
First fall frosttypically October 5 – 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 56215’s chill hours and zone:

How many chill hours does 56215 get?
56215 averages 1083 chill hours per winter, ranging from 720 to 1332 across the last 10 years.
What hardiness zone is 56215?
56215 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