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Chill hours in T9K

The short answer

T9K averages 903 chill hours per winter (6231,189 across 10 years) in USDA zone 3a.
T9K climate
Average chill hours903 (623–1,189 across 10 winters)
USDA hardiness zone3a (NRCan zone 2b)
Last spring frosttypically April 29 – May 17
First fall frosttypically September 15 – October 6

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 T9K’s chill hours and zone:

How many chill hours does T9K get?
T9K averages 903 chill hours per winter, ranging from 623 to 1189 across the last 10 years.
What hardiness zone is T9K?
T9K is in USDA hardiness zone 3a.

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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