Skip to content
EveryOrchard
Menu

Location almanac

Chill hours in T2B

The short answer

T2B averages 1,329 chill hours per winter (9621,587 across 10 years) in USDA zone 4a.
T2B climate
Average chill hours1,329 (962–1,587 across 10 winters)
USDA hardiness zone4a (NRCan zone 4a)
Last spring frosttypically May 2 – May 22
First fall frosttypically September 13 – October 6

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 T2B’s chill hours and zone:

How many chill hours does T2B get?
T2B averages 1329 chill hours per winter, ranging from 962 to 1587 across the last 10 years.
What hardiness zone is T2B?
T2B is in USDA hardiness zone 4a.

Growing fruit trees in T2B? 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