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Chill hours in T0J

The short answer

T0J averages 1,146 chill hours per winter (7631,438 across 10 years) in USDA zone 3b.
T0J climate
Average chill hours1,146 (763–1,438 across 10 winters)
USDA hardiness zone3b (NRCan zone 3b)
Last spring frosttypically April 23 – May 22
First fall frosttypically September 28 – October 15

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 T0J’s chill hours and zone:

How many chill hours does T0J get?
T0J averages 1146 chill hours per winter, ranging from 763 to 1438 across the last 10 years.
What hardiness zone is T0J?
T0J 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