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Chill hours in P5E

The short answer

P5E averages 1,265 chill hours per winter (1,0211,603 across 10 years) in USDA zone 4b.
P5E climate
Average chill hours1,265 (1,021–1,603 across 10 winters)
USDA hardiness zone4b (NRCan zone 4b)
Last spring frosttypically April 27 – May 16
First fall frosttypically October 18 – 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 P5E’s chill hours and zone:

How many chill hours does P5E get?
P5E averages 1265 chill hours per winter, ranging from 1021 to 1603 across the last 10 years.
What hardiness zone is P5E?
P5E is in USDA hardiness zone 4b.

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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