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Chill hours in 58564

The short answer

58564 averages 1,179 chill hours per winter (6671,432 across 10 years) in USDA zone 4a.
58564 climate
Average chill hours1,179 (667–1,432 across 10 winters)
USDA hardiness zone4a
Last spring frosttypically April 25 – May 20
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 58564’s chill hours and zone:

How many chill hours does 58564 get?
58564 averages 1179 chill hours per winter, ranging from 667 to 1432 across the last 10 years.
What hardiness zone is 58564?
58564 is in USDA hardiness zone 4a.

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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