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Chill hours in T6X

The short answer

T6X averages 1,124 chill hours per winter (7851,356 across 10 years) in USDA zone 3b.
T6X climate
Average chill hours1,124 (785–1,356 across 10 winters)
USDA hardiness zone3b (NRCan zone 3b)
Last spring frosttypically April 22 – May 21
First fall frosttypically September 28 – October 10

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 T6X’s chill hours and zone:

How many chill hours does T6X get?
T6X averages 1124 chill hours per winter, ranging from 785 to 1356 across the last 10 years.
What hardiness zone is T6X?
T6X is in USDA hardiness zone 3b.

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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