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Chill hours in A0P

The short answer

A0P averages 770 chill hours per winter (554951 across 10 years) in USDA zone 4a.
A0P climate
Average chill hours770 (554–951 across 10 winters)
USDA hardiness zone4a (NRCan zone 1b)
Last spring frosttypically June 2 – June 21
First fall frosttypically September 18 – October 4

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 A0P’s chill hours and zone:

Marginal (23)

Possible in a good year or a favorable microclimate — click through for the caveats.

Marginal varieties for this location
VarietyFruit
AkaneApple
CortlandApple
Cox's Orange PippinApple
EmpireApple
HaralsonApple
HoneycrispApple
LibertyApple
SpartanApple
WealthyApple
Yellow TransparentApple
GoldcotApricot
HarkoNectarine
MericrestNectarine
ContenderPeach
CresthavenPeach
D'AnjouPear
Harrow DelightPear
Blue DamsonPlum
French Improved PrunePlum
Italian PrunePlum
StanleyPlum
SunburstSweet Cherry
MeteorTart Cherry
How many chill hours does A0P get?
A0P averages 770 chill hours per winter, ranging from 554 to 951 across the last 10 years.
What hardiness zone is A0P?
A0P 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