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Chill hours in T9G

The short answer

T9G averages 1,187 chill hours per winter (8591,407 across 10 years) in USDA zone 3b.
T9G climate
Average chill hours1,187 (859–1,407 across 10 winters)
USDA hardiness zone3b (NRCan zone 3b)
Last spring frosttypically April 22 – May 21
First fall frosttypically September 28 – October 22

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 T9G’s chill hours and zone:

How many chill hours does T9G get?
T9G averages 1187 chill hours per winter, ranging from 859 to 1407 across the last 10 years.
What hardiness zone is T9G?
T9G 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