Source: BC Hydro – Balancing Authority Load Data (B.C.), Alberta Electric System Operator – Market and system reporting (Alberta)
Description: This line chart shows the maximum daily temperature for five cities in Alberta and B.C. in degrees Celsius for the months of June and July. The darker lines represent daily high temperatures for a particular year and the lighter lines show the 2015 to 2020 average daily high. The chart can be changed to display data from any year between 2015 and 2021. Temperatures peaked in late June through early July in the western Canadian provinces during the 2021 heat dome, with interior B.C. experiencing the highest temperatures.