local
Heat and humidity gradually return
By KTVU FOX 2 News
· July 19, 2026
· 1 min read
Tonight: Low clouds and fog return to the coast and bays overnight, while inland skies stay mostly clear. Comfortable overnight temperatures with a light ocean breeze.
Sunday: Seasonable weather continues with morning clouds near the coast giving way to afternoon sunshine. Inland valleys warm i...
Key takeaway Inland valleys warm into the 80s and low 90s, while beaches remain cool.
Why this matters in The San Francisco
The return of heat and humidity to San Francisco will likely have a significant impact on the city's transportation systems, particularly for commuters who rely on public transit. As inland temperatures climb into the 90s, the warmer conditions may lead to increased delays and overcrowding on buses and trains, especially during peak hours. Additionally, the hotter afternoons may also affect the city's iconic cable cars, which can be prone to mechanical issues in high temperatures. Residents in coastal communities, however, can expect to remain relatively cool thanks to the marine influence, which will help to mitigate the effects of the heat wave. The city's emergency services should also be prepared for an increase in heat-related illnesses, particularly among vulnerable populations such as the elderly and young children. As the warmest day of the stretch approaches, San Francisco residents should take necessary precautions to stay cool and safe.
About this story
Original reporting by KTVU FOX 2 News . The San Francisco surfaces reporting from trusted publishers and adds local editorial context so readers can quickly understand what a story means for their community. We attribute every source, link to the original report, and follow a documented editorial standards policy. To understand how stories are selected and reviewed, read our about page .
For the complete original report, visit KTVU FOX 2 News . Have a tip or correction? Contact our newsroom .
Category: local ·
Published: July 19, 2026 ·
Source: KTVU FOX 2 News ·
Reading time: 1 min
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Frequently asked about this story
What is this story about? Tonight: Low clouds and fog return to the coast and bays overnight, while inland skies stay mostly clear. Comfortable overnight temperatures with a light ocean breeze.
Sunday: Seasonable weather continues with morning clouds near the coast giving way to afternoon sunshine. Inland valleys warm i...
When was this published? This article was first published on July 19, 2026 by KTVU FOX 2 News and curated for The San Francisco readers.
Who reported this story? This story was reported by KTVU FOX 2 News. To learn more about how The San Francisco selects and reviews stories, see our editorial standards .
Where can I find related coverage? See more local coverage from The San Francisco, or browse our daily briefing and topic hubs .
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