Canada's Climate official measurement is metric

Climate
Canada's official measurement is metric, however many people, especially those aged 40 and over, will still use the imperial system for many things. One of the most common holdovers from the imperial system is the use of feet and inches for measurement of short distances and heights, and especially the use of pounds for masses, even among younger Canadians. However in the province of Quebec, the metric system is used more widely by the population. You will still hear older Canadians use the term 'mile' when referring to informal distances, and may also give temperatures in Fahrenheit when referring to pools and hot tubs. All weather forecasts will be in °C, except for border towns such as Windsor and Niagara Falls where media often give weather forecasts in °F.
Trying to distill the climate of Canada into an easy-to-understand statement is impossible, given the vast area and diverse geography within the country. Overall, in most places, winters are harsh compared to much of the world, on par with Eurasia. The most populated region, southern Ontario has a less severe climate, similar to the bordering regions of the midwestern and northeastern United States. Iqaluit, the capital of Nunavut, is just south of the Arctic Circle and remains very cold except for the months of July and August, when the July average maximum is only 12°C (54°F). On the other hand, the coastlines of British Columbia are very mild for their latitude, remaining above freezing for most of winter, yet they are not far away from some of the largest mountain glaciers found on the continent.
Most of the large Canadian urban areas are within 200 kilometres (124 mi) of Canada's border with the United States (Edmonton and Calgary being the only exceptions). Visitors to most cities will most likely not have to endure the weather that accompanies a trip to more remote northern or mountainous areas often pictured on postcards of Canada. Summers in the most populated parts of Canada are generally short and hot. Summer temperatures over 35°C (95°F) are not unusual in Southern Ontario, the southern Prairies and the southern Interior of B.C., with Osoyoos being the hot spot of Canada for average daily maximums. Toronto's climate is only slightly cooler than many of the larger cities in the northeastern United States, and summers in the southern parts of Ontario and Quebec (includes Montreal) are often hot and humid. In contrast, humidity is often low in the western interior during the summer, even during hot weather, and more cooling occurs at night. In the winter, eastern Canada, particularly the Atlantic Provinces, are sometimes subject to inclement weather systems entering from the U.S. bringing snow, high wind, rain, sleet, and temperatures in their wake of under -10°C (14°F).
Many inland cities, especially those in the Prairies, experience extreme temperature fluctuations, sometimes very rapidly. Owing to a dry climate (more arid west than east on the southern Prairies), bright sunshine hours are plentiful in the 2300-2600 annual hours range. Winnipeg (also colloquially known as 'Winterpeg') has hot summers with bouts of aggressive humidity, yet experiences very cold winters where temperatures around -40°C (-40°F) are not uncommon and can stay below -15°C (5°F) for long stretches. The official hottest temperature in Canada ever recorded was in southern Saskatchewan, at 45°C (113°F), while the coldest was in Snag, Yukon -63°C (-81°F). Summer storms in the Prairies and Ontario can be violent and sometimes unleash strong damaging winds, hail, and rarely, tornadoes. On the west coast of British Columbia, Vancouver and Victoria are far more temperate and get very little snow, average low wind speeds and seldom experience temperatures below 0°C or above 27°C (32-80°F) but receive high rainfall amounts in winter then in turn dry, sunny, pleasant summers.
The average temperature is typically colder in Canada than in the U.S. and Western Europe as a whole, so bring a warm jacket if visiting between October and April, and early and later than this if visiting hilly/mountainous terrain or areas further north. The rest of the year, over most of the country, daytime highs are generally well above 15°C (60°F) and usually into the 20s-30s°C(70s-90s°F) range during the day.