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Chill hours in P9N

The short answer

P9N averages 926 chill hours per winter (5591,383 across 10 years) in USDA zone 4b.
P9N climate
Average chill hours926 (559–1,383 across 10 winters)
USDA hardiness zone4b (NRCan zone 3b)
Last spring frosttypically May 2 – May 22
First fall frosttypically October 16 – November 2

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 P9N’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
ReliancePeach
How many chill hours does P9N get?
P9N averages 926 chill hours per winter, ranging from 559 to 1383 across the last 10 years.
What hardiness zone is P9N?
P9N is in USDA hardiness zone 4b.

Growing fruit trees in P9N? 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