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Chill hours in 50606

The short answer

50606 averages 1,319 chill hours per winter (1,1741,552 across 10 years) in USDA zone 4b.
50606 climate
Average chill hours1,319 (1,174–1,552 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 20 – April 28
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 50606’s chill hours and zone:

How many chill hours does 50606 get?
50606 averages 1319 chill hours per winter, ranging from 1174 to 1552 across the last 10 years.
What hardiness zone is 50606?
50606 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