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Chill hours in T9E

The short answer

T9E averages 1,137 chill hours per winter (7461,363 across 10 years) in USDA zone 3b.
T9E climate
Average chill hours1,137 (746–1,363 across 10 winters)
USDA hardiness zone3b (NRCan zone 3b)
Last spring frosttypically April 29 – 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 T9E’s chill hours and zone:

How many chill hours does T9E get?
T9E averages 1137 chill hours per winter, ranging from 746 to 1363 across the last 10 years.
What hardiness zone is T9E?
T9E 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