Article content Fort McMurray averaged 40.1 C on June 30 as a heat wave covered much of western Canada for the week. Environment Canada puts the previous record at 38.9 C on July 18, 1941. We apologize, but this video has failed to load. Try refreshing your browser. Local EMS responded to eight heat-related calls during heat wave Back to video As temperatures rose last week, people were urged to stay indoors and keep hydrated. Most construction sites shut down operations as it became too dangerous for most workers to remain outside. Housing advocates say the heat wave demonstrates the importance of stable housing in the Fort McMurray Wood Buffalo area.