The vast majority of Canada’s major cities experience fewer freezing nights now than they did just a few decades ago.

Warming temperatures are a hallmark of climate change around the world. Extreme summertime heat waves grab most of the headlines, but rising overnight low temperatures are a major driver of the world’s warming.

DON’T MISS: CLIMATE CHANGE EFFECTS ON CANADIAN WILDLIFE SHOW HOW VITAL WINTER IS

WARMING NIGHTS DURING THE COOL SEASON

Meteorologists use 30-year periods to calculate climate normals. The current set of weather data used to determine average temperatures and precipitation runs from 1991 through 2020.

[Average Days At Or Below Freezing 1991-2020] Average Days At Or Below Freezing 1991-2020

According to the 1991-2020 climate normals, Vancouver averages about 40 d

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