Data: Climate Central; Map: Alex Fitzpatrick/Axios
Don't let June Gloom mislead you: summers are getting hotter in San Diego — and in the rest of the U.S.
Why it matters: Hotter summers are one of the clearest ways we experience climate change.
They also present health risks for vulnerable groups like children, pregnant women, the elderly and homeless people.
Driving the news: Average summer temperatures between 1970 and 2024 rose in 97% of the 242 cities analyzed in a new report from Climate Central, a climate research group.
Among those cities, summers are now 2.6°F hotter on average.
The analysis uses NOAA data and defines "summer" as June through August.
Zoom in: San Diego is getting even hotter, with the average summer temperature warming by 3.2°F since 1970.
What's next: Summer 2025 is likely to be hotter than normal for much of the country, per the National Weather Service's seasonal outlook.
That includes San Diego and the rest of southern California, per NWS.