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Chill hours in P0L

The short answer

P0L averages 918 chill hours per winter (6081,102 across 10 years) in USDA zone 4a.
P0L climate
Average chill hours918 (608–1,102 across 10 winters)
USDA hardiness zone4a (NRCan zone 2a)
Last spring frosttypically May 16 – June 1
First fall frosttypically September 19 – October 17

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 P0L’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 P0L get?
P0L averages 918 chill hours per winter, ranging from 608 to 1102 across the last 10 years.
What hardiness zone is P0L?
P0L is in USDA hardiness zone 4a.

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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