California Extreme Heat

Climate Central’s analysis shows how much hotter parks are projected to get later this century.

California has more than 1 million people that are especially vulnerable to extreme heat. 

Riverside is the 4th fastest-warming city in the U.S.

Summers are getting muggier as the dewpoint temperature rises

The average temperature is rising with climate change. See more of California's trends here >>

This interactive shows a state-by-state analysis of U.S. temperature trends since the first Earth Day.

Currently, California averages 35 dangerous heat days a year. By 2050, the state is projected to see almost 50 such days a year.

100 Years of Warming at the National Parks

Learn more about temperture trends in California's National Parks.

What's Happening with Extreme Heat?


Southwest, Central Plains Face ‘Unprecedented’ Drought

Climate change is creating an “unprecedented” risk of severe drought in the Southwest and Central Plains... More


Dead Trees Adding to California Firefighters’ Battle

With drought and climate change conspiring to push California’s summer wildfire season into premature overdrive, the state’s lead wildfire agency has acquired a multimillion dollar arsenal to help it cope with unprecedented numbers of dying trees... More


Large Wildfires Are Now More Common and Destructive

Spring and summer — two key seasons for wildfires — have warmed 2.1°F across the West, on average... More


The Southwest May Have Entered a ‘Drier Climate State’

The Southwest is already the most arid part of the U.S. Now new research indicates it’s becoming even more dry as wet weather patterns, quite literally, dry up... More

Sign up for email updates to stay informed about what your state is doing to mitigate weather risks.