ON_3.10: Observed Great Lakes annual maximum ice cover (%) from 1973 to 2018. The red dashed line indicates the long-term average.
![](https://changingclimate.ca/site/assets/uploads/sites/4/2022/07/ON_3.10-1024x484.png)
Observed Great Lakes annual maximum ice cover (%) from 1973 to 2018. The red dashed line indicates the long-term average.