average temperature quebec
1 The average annual temperature in Quebec City, Quebec, Canada is cool at 4 degrees Celsius (39.2 degrees Fahrenheit). The average daily temperature range/ variation is 10 C (18 F). 2  July is the warmest month (somewhat warm) with a mean temperature of 19.1 degrees Celsius (66.38 degrees Fahrenheit). 3  January is the coldest month (very cold) having an average temperature of -12.4 degrees Celsius (9.68 degrees Fahrenheit).