Skip to content
EveryOrchard
Menu

Location almanac

Chill hours in G5B

The short answer

G5B averages 965 chill hours per winter (7511,277 across 10 years) in USDA zone 5a.
G5B climate
Average chill hours965 (751–1,277 across 10 winters)
USDA hardiness zone5a (NRCan zone 3b)
Last spring frosttypically May 12 – May 26
First fall frosttypically October 9 – October 30

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 G5B’s chill hours and zone:

Good fit (150)

Chill and zone requirements are comfortably met in G5B.

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 G5B get?
G5B averages 965 chill hours per winter, ranging from 751 to 1277 across the last 10 years.
What hardiness zone is G5B?
G5B is in USDA hardiness zone 5a.

Growing fruit trees in G5B? 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