Skip to content
EveryOrchard
Menu

Location almanac

Chill hours in S0M

The short answer

S0M averages 860 chill hours per winter (5351,142 across 10 years) in USDA zone 3b.
S0M climate
Average chill hours860 (535–1,142 across 10 winters)
USDA hardiness zone3b (NRCan zone 2b)
Last spring frosttypically April 30 – May 17
First fall frosttypically September 19 – October 13

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 S0M’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 S0M get?
S0M averages 860 chill hours per winter, ranging from 535 to 1142 across the last 10 years.
What hardiness zone is S0M?
S0M is in USDA hardiness zone 3b.

Growing fruit trees in S0M? Get a care calendar anchored to this exact climate, with email reminders.

Start My Orchard

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