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Chill hours in 57017

The short answer

57017 averages 1,149 chill hours per winter (7451,303 across 10 years) in USDA zone 4b.
57017 climate
Average chill hours1,149 (745–1,303 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 22 – May 10
First fall frosttypically October 7 – November 7

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 57017’s chill hours and zone:

How many chill hours does 57017 get?
57017 averages 1149 chill hours per winter, ranging from 745 to 1303 across the last 10 years.
What hardiness zone is 57017?
57017 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