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Chill hours in 56236

The short answer

56236 averages 1,109 chill hours per winter (7111,384 across 10 years) in USDA zone 4b.
56236 climate
Average chill hours1,109 (711–1,384 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 23 – May 10
First fall frosttypically October 11 – November 13

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 56236’s chill hours and zone:

How many chill hours does 56236 get?
56236 averages 1109 chill hours per winter, ranging from 711 to 1384 across the last 10 years.
What hardiness zone is 56236?
56236 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