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Chill hours in G5A

The short answer

G5A averages 989 chill hours per winter (6541,370 across 10 years) in USDA zone 5a.
G5A climate
Average chill hours989 (654–1,370 across 10 winters)
USDA hardiness zone5a (NRCan zone 4a)
Last spring frosttypically April 30 – May 18
First fall frosttypically October 17 – November 3

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 G5A’s chill hours and zone:

Good fit (150)

Chill and zone requirements are comfortably met in G5A.

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 120 more good fit varieties

Marginal (2)

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

Marginal varieties for this location
VarietyFruit
Rome BeautyApple
ReliancePeach
How many chill hours does G5A get?
G5A averages 989 chill hours per winter, ranging from 654 to 1370 across the last 10 years.
What hardiness zone is G5A?
G5A 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