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Chill hours in S6W

The short answer

S6W averages 809 chill hours per winter (5221,101 across 10 years) in USDA zone 3b.
S6W climate
Average chill hours809 (522–1,101 across 10 winters)
USDA hardiness zone3b (NRCan zone 2b)
Last spring frosttypically May 6 – May 21
First fall frosttypically September 20 – October 7

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 S6W’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
CresthavenPeach
How many chill hours does S6W get?
S6W averages 809 chill hours per winter, ranging from 522 to 1101 across the last 10 years.
What hardiness zone is S6W?
S6W is in USDA hardiness zone 3b.

Growing fruit trees in S6W? 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