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Chill hours in K2L

The short answer

K2L averages 1,307 chill hours per winter (1,0271,664 across 10 years) in USDA zone 4b.
K2L climate
Average chill hours1,307 (1,027–1,664 across 10 winters)
USDA hardiness zone4b (NRCan zone 5b)
Last spring frosttypically April 27 – May 10
First fall frosttypically October 18 – November 4

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 K2L’s chill hours and zone:

How many chill hours does K2L get?
K2L averages 1307 chill hours per winter, ranging from 1027 to 1664 across the last 10 years.
What hardiness zone is K2L?
K2L 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