Canadian Cities With Most Uncomfortable Temperatures
One large Canadian city stands out from the rest for its frequent nasty temperatures.
Here you'll find temperature data and rankings for the major cities in Canada that least often have mild temperatures. These cities endure the greatest number of days with temperatures that are unpleasantly cold or uncomfortably hot.
There are also lists here of Canadian cities that put up with the most cold nights and the shortest frost-free season. (You can also see rankings for Canada's cities with the mildest temperatures.)
Among the top ten cities for all three measures of harsh weather are Regina, Saskatchewan; Saguenay, Quebec; Saskatoon, Saskatchewan; Thunder Bay, Ontario; and Winnipeg, Manitoba. But just one city ranks consistently among the top three for unpleasant temperatures: Thunder Bay.
Thunder Bay has more nights than any large Canadian city when the temperature drops below 2 °C (35.6 °F). It also ties for the shortest period between the last frost of spring and the first frost of fall, at 111 days. Plus it comes in third for the most days a year when the highest temperature is outside the comfortable range of 10 to 30 degrees Celsius (50 to 68 degrees Fahrenheit).
The cities included in these rankings are Canada's largest metropolitan areas. These are the 33 urban regions that had over 100,000 people according to the 2011 census by Statistics Canada. The temperature data are averages of weather measurements made from 1981 to 2010.
Most Days With Unpleasant Temperatures
From the east coast to the Rocky Mountains are Canadian cities where at least half the days have high temperatures that fall outside the mild zone of 10 to 30 °C. Their days often are either too hot for comfort, or more likely, are anything from brisk to freezing.
|City||Days a Year|
|St. John's, Newfoundland||200|
|Thunder Bay, Ontario||195|
|Québec City, Quebec||187|
Most Cold Nights
Night-time lows below 2 °C are more common than not for Canada's large cities with the least comfortable temperatures. The top ten all have more than 200 nights a year when it's that chilly.
|City||Days a Year|
|Thunder Bay, Ontario||227|
|St. John's, Newfoundland||202|
Shortest Frost-Free Season
The frost free growing season is usually over in less than four months at some Canadian cities. These ten have the shortest period between their last spring frost and the first fall frost.
|City||Days||Last Frost||First Frost|
|Sherbrooke, Quebec||111||May 28||Sep 17|
|Thunder Bay, Ontario||111||May 30||Sep 19|
|Regina, Saskatchewan||115||May 20||Sep 12|
|Calgary, Alberta||117||May 21||Sep 16|
|Winnipeg, Manitoba||121||May 23||Sep 22|
|Saguenay, Quebec||123||May 22||Sep 23|
|Guelph, Ontario||125||May 18||Sep 22|
|Moncton, New Brunswick||131||May 23||Oct 2|
|Saskatoon, Saskatchewan||131||May 11||Sep 20|
|Trois-Rivières, Quebec||132||May 17||Sep 27|
Environment Canada. Meteorological Service of Canada. Canadian Climate Normals. 1981-2010 Climate Normals & Averages.