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Chill hours in 57219

The short answer

57219 averages 1,061 chill hours per winter (6421,310 across 10 years) in USDA zone 4b.
57219 climate
Average chill hours1,061 (642–1,310 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 28 – May 19
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 57219’s chill hours and zone:

How many chill hours does 57219 get?
57219 averages 1061 chill hours per winter, ranging from 642 to 1310 across the last 10 years.
What hardiness zone is 57219?
57219 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