CHARLOTTE, NC - AUGUST 31: A general view of the Charlotte skyline after the Democratic National Convention Committee Unveiling Stage for the DNC at Time Warner Cable Arena on August 31, 2012 in Charlotte, North Carolina. (Photo by Streeter Lecka/Getty Images)
A new study from has researchers projecting that Mecklenburg County could begin to see 102 Days of 90℉ Temperatures annually. The US government under President Biden has pledged to cut greenhouse gas emissions by 50% by 2030. This is close to double what was pledged under the Paris Climate Accord. Still, without significant, most likely life-altering changes, scientists predict temperatures will continue to rise. Data from the U.S. Geological Survey (USGS) shows that some parts of the U.S. will spend over 60% of the year with temperatures above 90℉ by the year 2080.

The Intergovernmental Panel on Climate Change (IPCC)—part of the United Nations —predicts that under certain scenarios global temperatures could increase by upwards of 5℉ or 6℉ by the end of the century. It is important to note, however, that global warming and temperature increases are not uniform. This means that some places will experience temperature increases that are much greater than average.

This means places can expect more unusually hot summer days.  To find the counties projected to experience the hottest weather, researchers at Porch analyzed data from the USGS and NOAA. They calculated the projected number of days per year with a temperature of 90℉ or higher for the year 2080. They also calculated the historical number of days per year with a temperature of 90℉ or higher, and the historical average summer maximum and minimum temperatures.

Only counties with at least 200,000 people were included in the analysis. Counties were grouped based on population size:

  • Small counties: 200,000–349,999
  • Midsize counties: 350,000–749,999
  • Large counties: 750,000 or more

The summary of the data for Mecklenburg County, NC:

  • Projected number of days per year w/ temp above 90°F (for year 2080): 102
  • Historical number of days per year w/ temp above 90°F: 33
  • Historical average summer max temperature: 87.6°F
  • Historical average summer min temperature: 65.7°F

For more information, a detailed methodology, and complete results, you can find the original report on Porch’s website: