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Chill hours in P4N

The short answer

P4N averages 996 chill hours per winter (7191,251 across 10 years) in USDA zone 4a.
P4N climate
Average chill hours996 (719–1,251 across 10 winters)
USDA hardiness zone4a (NRCan zone 2b)
Last spring frosttypically May 11 – May 28
First fall frosttypically October 4 – October 21

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 P4N’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 P4N get?
P4N averages 996 chill hours per winter, ranging from 719 to 1251 across the last 10 years.
What hardiness zone is P4N?
P4N is in USDA hardiness zone 4a.

Growing fruit trees in P4N? 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