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Chill hours in T7E

The short answer

T7E averages 1,254 chill hours per winter (9841,535 across 10 years) in USDA zone 3a.
T7E climate
Average chill hours1,254 (984–1,535 across 10 winters)
USDA hardiness zone3a (NRCan zone 3a)
Last spring frosttypically April 24 – May 22
First fall frosttypically September 16 – 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 T7E’s chill hours and zone:

How many chill hours does T7E get?
T7E averages 1254 chill hours per winter, ranging from 984 to 1535 across the last 10 years.
What hardiness zone is T7E?
T7E 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