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Chill hours in P0X

The short answer

P0X averages 848 chill hours per winter (4241,280 across 10 years) in USDA zone 4b.
P0X climate
Average chill hours848 (424–1,280 across 10 winters)
USDA hardiness zone4b (NRCan zone 3a)
Last spring frosttypically May 2 – May 27
First fall frosttypically October 13 – November 1

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 P0X’s chill hours and zone:

Marginal (3)

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

Marginal varieties for this location
VarietyFruit
ContenderPeach
CresthavenPeach
ReliancePeach
How many chill hours does P0X get?
P0X averages 848 chill hours per winter, ranging from 424 to 1280 across the last 10 years.
What hardiness zone is P0X?
P0X is in USDA hardiness zone 4b.

Growing fruit trees in P0X? 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