The worst of California’s heat wave is still ahead. Here’s when temperatures will peak - San Francisco Chronicle

San Francisco Chronicle
March 18, 2026
3 min read

Quick Insights

The Bottom Line

California's heat wave will intensify further with peak temperatures still ahead.

How This Affects You

Extreme heat can increase electricity demand and costs, raise heat-related illness risk, and stress water supplies during peak summer months.

AI Summary

California faces escalating heat conditions, with the most severe temperatures still to arrive in the coming days. The state is already experiencing dangerous heat levels, but meteorological forecasts indicate peak temperatures will occur later in the current weather system, intensifying risks across multiple regions. Extreme heat poses immediate threats including heat-related illness, strain on the electrical grid, and potential fire danger, particularly in areas already dealing with drought conditions. Power demand is expected to surge as residents increase air conditioning use, testing the state's energy infrastructure during peak hours. Residents are being advised to prepare for sustained high temperatures and take precautions to stay hydrated and cool.

Should this be getting more attention?

You Might Have Missed

Related stories from different sources and perspectives

California spot ties U.S. temperature record for March amid heat wave
Environment

California spot ties U.S. temperature record for March amid heat wave

A California desert community tied the highest March temperature ever recorded in the U.S., amid a record-breaking winter heat wave in the Southwest.

CBS NewsMar 19
California hits all-time U.S. high for winter heat - San Francisco Chronicle
Environment

California hits all-time U.S. high for winter heat - San Francisco Chronicle

San Francisco ChronicleMar 19
110 degrees? Forecast warns of record-setting March heat wave - USA Today
Environment

110 degrees? Forecast warns of record-setting March heat wave - USA Today

<a href="https://news.google.com/rss/articles/CBMiwAFBVV95cUxNSllCMXJJMWtEbThTOXFUNE9tQ1U4M24tMXpPOVE2M3B1dUJSckU2RXdhTUlmenlwZ0hTZEY2UXQxN1Z0U3ZMclQ1Slp0QjBxRDljVzRlTjc0TEdJVG5XQUJULTJCR1FRQjc2S3dpTXdmYXNqRGdkcGFGV2hJcG1XaV9oUFh6NmRTWTduUmdTRnA2T3Bra2NWVEFiNXVTOVpyak9QZEZLSFBYMzVubFFUd0lfNFUzRFVrYW05ZW95ZUc?oc=5" target="_blank">110 degrees? Forecast warns of record-setting March heat wave</a>&nbsp;&nbsp;<font color="#6f6f6f">USA Today</font>

USA TodayMar 17
Epic L.A. heat wave poses deadly health threat — and a test for California - Los Angeles Times
Health

Epic L.A. heat wave poses deadly health threat — and a test for California - Los Angeles Times

Los Angeles TimesMar 16
Can culling your garden slow a wildfire? A California city pins its hopes on a contested plan
Environment

Can culling your garden slow a wildfire? A California city pins its hopes on a contested plan

<p>Berkeley is adopting the ‘Zone 0’ regulation, which mandates first 5ft around the home in high-risk areas should be clear of combustible material</p><p>Michel Thouati went through the five stages of grief before he ripped his beloved fig tree from the earth. There was a persimmon and an elderberry too, nestled close to his hillside<strong> </strong>home in Berkeley,California, and they all had to go.</p><p>The plants thriving on his small property had become overshadowed by the dangers growing with them: an emerging body of research had found landscaping can help fuel the disastrous fires sweeping out of the wildland and into neighborhoods like his. Tucked into the ridges overlooking California’s San Francisco Bay and against an expansive nature area, the house Thouati and his wife have owned for 30-some years sits in <a href="https://osfm.fire.ca.gov/what-we-do/community-wildfire-preparedness-and-mitigation/fire-hazard-severity-zones">one of the highest wildfire-threat areas in ...

The Guardian US NewsMar 17
‘Eerily silent’: Cape York residents batten down the hatches ahead of Tropical Cyclone Narelle’s arrival
Environment

‘Eerily silent’: Cape York residents batten down the hatches ahead of Tropical Cyclone Narelle’s arrival

<p>Residents of Coen and surrounding towns in far north Queensland spent Thursday sandbagging, stockpiling food and preparing for power outages ahead of possible category 5 storm</p><ul><li><p><a href="https://www.theguardian.com/australia-news/2026/mar/19/cyclone-narelle-tracker-map-path-track-tracking-forecast-queensland-qld-update-today-rain-winds-bom-radar-watch-category">Cyclone Narelle path tracker map</a></p></li><li><p>Get our <a href="https://www.theguardian.com/email-newsletters?CMP=cvau_sfl">breaking news email</a>, <a href="https://app.adjust.com/w4u7jx3">free app</a> or <a href="https://www.theguardian.com/australia-news/series/full-story?CMP=cvau_sfl">daily news podcast</a></p></li></ul><p>In some ways, it seemed a pleasant, wet season morning in the remote Aboriginal community of Coen in tropical far north Queensland on Thursday – and Sara Watkins was preparing for a sausage sizzle.</p><p>“It’s a day that you’d spend going fishing,” she said.</p> <a href="https://www....

The Guardian World NewsMar 19
Read Next
Pittsburgh’s air pollution estimated to claim 3,000+ lives per year − and EPA rollbacks aren’t helping
Environment

Pittsburgh’s air pollution estimated to claim 3,000+ lives per year − and EPA rollbacks aren’t helping

A new study linking Pittsburgh’s air pollution to thousands of deaths each year has been published just as the EPA moves to weaken pollution standards.

Continue reading

Did this story change how you see things?

Stories like this only matter when people see them. Help us get verified journalism in front of more eyes.

Share this story

Get the daily digest

Save for later

The Verity Ledger curates verified investigative journalism from trusted sources only.

See our sources