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Chill hours in G0W

The short answer

G0W averages 840 chill hours per winter (6941,010 across 10 years) in USDA zone 4a.
G0W climate
Average chill hours840 (694–1,010 across 10 winters)
USDA hardiness zone4a (NRCan zone 2a)
Last spring frosttypically May 12 – June 3
First fall frosttypically September 23 – October 19

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 G0W’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 G0W get?
G0W averages 840 chill hours per winter, ranging from 694 to 1010 across the last 10 years.
What hardiness zone is G0W?
G0W is in USDA hardiness zone 4a.

Growing fruit trees in G0W? 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