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Chill hours in 13662

The short answer

13662 averages 1,420 chill hours per winter (1,1321,672 across 10 years) in USDA zone 4b.
13662 climate
Average chill hours1,420 (1,132–1,672 across 10 winters)
USDA hardiness zone4b
Last spring frosttypically April 23 – May 14
First fall frosttypically October 26 – November 8

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 13662’s chill hours and zone:

How many chill hours does 13662 get?
13662 averages 1420 chill hours per winter, ranging from 1132 to 1672 across the last 10 years.
What hardiness zone is 13662?
13662 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