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Chill hours in P7A

The short answer

P7A averages 956 chill hours per winter (4801,255 across 10 years) in USDA zone 4b.
P7A climate
Average chill hours956 (480–1,255 across 10 winters)
USDA hardiness zone4b (NRCan zone 2b)
Last spring frosttypically May 5 – May 22
First fall frosttypically October 5 – 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 P7A’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 P7A get?
P7A averages 956 chill hours per winter, ranging from 480 to 1255 across the last 10 years.
What hardiness zone is P7A?
P7A is in USDA hardiness zone 4b.

Growing fruit trees in P7A? 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