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Chill hours in T7P

The short answer

T7P averages 1,152 chill hours per winter (8511,332 across 10 years) in USDA zone 3b.
T7P climate
Average chill hours1,152 (851–1,332 across 10 winters)
USDA hardiness zone3b (NRCan zone 3b)
Last spring frosttypically April 26 – May 21
First fall frosttypically September 27 – 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 T7P’s chill hours and zone:

How many chill hours does T7P get?
T7P averages 1152 chill hours per winter, ranging from 851 to 1332 across the last 10 years.
What hardiness zone is T7P?
T7P 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