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Chill hours in M9R

The short answer

M9R averages 1,627 chill hours per winter (1,3831,951 across 10 years) in USDA zone 5b.
M9R climate
Average chill hours1,627 (1,383–1,951 across 10 winters)
USDA hardiness zone5b (NRCan zone 6b)
Last spring frosttypically April 18 – April 29
First fall frosttypically October 19 – November 10

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 M9R’s chill hours and zone:

Good fit (152)

Chill and zone requirements are comfortably met in M9R.

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 M9R get?
M9R averages 1627 chill hours per winter, ranging from 1383 to 1951 across the last 10 years.
What hardiness zone is M9R?
M9R is in USDA hardiness zone 5b.

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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