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Chill hours in G4A

The short answer

G4A averages 1,065 chill hours per winter (7771,568 across 10 years) in USDA zone 5a.
G4A climate
Average chill hours1,065 (777–1,568 across 10 winters)
USDA hardiness zone5a (NRCan zone 4b)
Last spring frosttypically April 30 – May 22
First fall frosttypically September 24 – October 28

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 G4A’s chill hours and zone:

Good fit (152)

Chill and zone requirements are comfortably met in G4A.

Good fit varieties for this location
VarietyFruit
Acey MacApple
AkaneApple
AnnaApple
Arkansas BlackApple
BraeburnApple
CameoApple
CandyCrispApple
CortlandApple
Cox's Orange PippinApple
CrimsonCrispApple
Dorsett GoldenApple
EarligoldApple
EmpireApple
FortuneApple
FujiApple
GalaApple
Ginger GoldApple
GoldRushApple
Golden DeliciousApple
Golden SupremeApple
Granny SmithApple
GravensteinApple
HoneycrispApple
IdaredApple
JonagoldApple
JonamacApple
JonathanApple
LibertyApple
LodiApple
McIntoshApple
Show 122 more good fit varieties
How many chill hours does G4A get?
G4A averages 1065 chill hours per winter, ranging from 777 to 1568 across the last 10 years.
What hardiness zone is G4A?
G4A is in USDA hardiness zone 5a.

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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