To determine the coldest towns in North America, 24/7 Wall St. reviewed average temperature data from the Global Historical Climate Network (Version 4) of the National Centers for Environmental Information of the National Oceanic and Atmospheric Administration. Towns were ranked based on the average year-round temperature from 2011 to 2020 of the nearest weather station in the GHCN. Only weather stations that were within 5 miles of an American city or town, Canadian population center, or Greenlandic town with at least 1,000 residents were considered. Population data for American cities and towns came from the U.S. Census Bureau’s 2019 American Community Survey and are five-year estimates. Population data for Canadian population centers and Greenlandic towns came from online map developer simplemaps. All listed average temperatures are for specific weather stations. In the cases where places had multiple weather stations, the figures listed are for the weather station with the lowest average year-round temperature.