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Chill hours in T1X

The short answer

T1X averages 1,309 chill hours per winter (1,0121,593 across 10 years) in USDA zone 4a.
T1X climate
Average chill hours1,309 (1,012–1,593 across 10 winters)
USDA hardiness zone4a (NRCan zone 4a)
Last spring frosttypically May 2 – May 22
First fall frosttypically September 14 – October 7

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 T1X’s chill hours and zone:

How many chill hours does T1X get?
T1X averages 1309 chill hours per winter, ranging from 1012 to 1593 across the last 10 years.
What hardiness zone is T1X?
T1X is in USDA hardiness zone 4a.

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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