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Chill hours in 56046

The short answer

56046 averages 1,170 chill hours per winter (9661,416 across 10 years) in USDA zone 4b.
56046 climate
Average chill hours1,170 (966–1,416 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 26 – May 11
First fall frosttypically October 12 – 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 56046’s chill hours and zone:

How many chill hours does 56046 get?
56046 averages 1170 chill hours per winter, ranging from 966 to 1416 across the last 10 years.
What hardiness zone is 56046?
56046 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