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Chill hours in 59319

The short answer

59319 averages 1,380 chill hours per winter (1,0681,594 across 10 years) in USDA zone 4b.
59319 climate
Average chill hours1,380 (1,068–1,594 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 25 – May 15
First fall frosttypically October 4 – October 26

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 59319’s chill hours and zone:

How many chill hours does 59319 get?
59319 averages 1380 chill hours per winter, ranging from 1068 to 1594 across the last 10 years.
What hardiness zone is 59319?
59319 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