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Chill hours in 12852

The short answer

12852 averages 1,253 chill hours per winter (1,0191,644 across 10 years) in USDA zone 4b.
12852 climate
Average chill hours1,253 (1,019–1,644 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically May 1 – May 18
First fall frosttypically October 11 – October 24

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 12852’s chill hours and zone:

How many chill hours does 12852 get?
12852 averages 1253 chill hours per winter, ranging from 1019 to 1644 across the last 10 years.
What hardiness zone is 12852?
12852 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