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Chill hours in T7V

The short answer

T7V averages 1,320 chill hours per winter (1,0031,660 across 10 years) in USDA zone 3b.
T7V climate
Average chill hours1,320 (1,003–1,660 across 10 winters)
USDA hardiness zone3b (NRCan zone 2b)
Last spring frosttypically May 1 – May 22
First fall frosttypically September 12 – October 13

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 T7V’s chill hours and zone:

How many chill hours does T7V get?
T7V averages 1320 chill hours per winter, ranging from 1003 to 1660 across the last 10 years.
What hardiness zone is T7V?
T7V 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