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Chill hours in 49866

The short answer

49866 averages 1,113 chill hours per winter (7521,530 across 10 years) in USDA zone 4b.
49866 climate
Average chill hours1,113 (752–1,530 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically May 1 – May 16
First fall frosttypically October 10 – November 3

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 49866’s chill hours and zone:

How many chill hours does 49866 get?
49866 averages 1113 chill hours per winter, ranging from 752 to 1530 across the last 10 years.
What hardiness zone is 49866?
49866 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