Skip to content
EveryOrchard
Menu

Location almanac

Chill hours in T1G

The short answer

T1G averages 1,537 chill hours per winter (1,2011,758 across 10 years) in USDA zone 4a.
T1G climate
Average chill hours1,537 (1,201–1,758 across 10 winters)
USDA hardiness zone4a (NRCan zone 4a)
Last spring frosttypically April 23 – May 19
First fall frosttypically September 28 – October 14

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 T1G’s chill hours and zone:

How many chill hours does T1G get?
T1G averages 1537 chill hours per winter, ranging from 1201 to 1758 across the last 10 years.
What hardiness zone is T1G?
T1G is in USDA hardiness zone 4a.

Growing fruit trees in T1G? Get a care calendar anchored to this exact climate, with email reminders.

Start My Orchard

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