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Chill hours in 59059

The short answer

59059 averages 1,564 chill hours per winter (1,2341,812 across 10 years) in USDA zone 4b.
59059 climate
Average chill hours1,564 (1,234–1,812 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 21 – May 10
First fall frosttypically October 4 – 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 59059’s chill hours and zone:

How many chill hours does 59059 get?
59059 averages 1564 chill hours per winter, ranging from 1234 to 1812 across the last 10 years.
What hardiness zone is 59059?
59059 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