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Chill hours in J6E

The short answer

J6E averages 1,208 chill hours per winter (1,0111,611 across 10 years) in USDA zone 4b.
J6E climate
Average chill hours1,208 (1,011–1,611 across 10 winters)
USDA hardiness zone4b (NRCan zone 5a)
Last spring frosttypically April 25 – May 14
First fall frosttypically October 18 – November 2

Computed from 10 winters of ERA5 hourly temperature (Open-Meteo, 2015–2025); zones from USDA PHZM 2023 / NRCan 1981–2010. Data updated July 3, 2026. See methodology.

Every variety in our database, checked against J6E’s chill hours and zone:

How many chill hours does J6E get?
J6E averages 1208 chill hours per winter, ranging from 1011 to 1611 across the last 10 years.
What hardiness zone is J6E?
J6E 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] Natural Resources Canada. Plant Hardiness Zones of Canada — accessed July 2026