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Chill hours in T9H

The short answer

T9H averages 813 chill hours per winter (5221,026 across 10 years) in USDA zone 3b.
T9H climate
Average chill hours813 (522–1,026 across 10 winters)
USDA hardiness zone3b (NRCan zone 2a)
Last spring frosttypically May 5 – May 23
First fall frosttypically September 17 – October 5

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 T9H’s chill hours and zone:

Marginal (1)

Possible in a good year or a favorable microclimate — click through for the caveats.

Marginal varieties for this location
VarietyFruit
CresthavenPeach
How many chill hours does T9H get?
T9H averages 813 chill hours per winter, ranging from 522 to 1026 across the last 10 years.
What hardiness zone is T9H?
T9H is in USDA hardiness zone 3b.

Growing fruit trees in T9H? Get a care calendar anchored to this exact climate, with email reminders.

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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