San Francisco's heat advisory runs through Sunday; inland areas face another day
A heat advisory begins at 11 a.m. Saturday in San Francisco and ends at 10 p.m. Sunday, while many inland Bay Area communities remain under advisory through Monday night.
The National Weather Service's 2:02 a.m. Saturday bulletin places San Francisco under a heat advisory from 11 a.m. on October 3 until 10 p.m. on Sunday, October 4.
Many inland communities, including San Jose and the East Bay's interior valleys, remain under advisory until 10 p.m. Monday. All times are Pacific Daylight Time. [1]
The distinction matters when planning a day outside—or returning to work on Monday. The inland advisory forecasts daytime highs from the mid-90s to low-100s Fahrenheit and limited overnight relief. That temperature range is not San Francisco's forecast. Check the forecast for your actual destination, particularly when travelling between the coast and inland valleys. [1][2]
NWS recommends shifting strenuous outdoor activity to cooler hours, drinking water, using cooled spaces and checking on people more vulnerable to heat. Never leave children or pets in parked vehicles. For a long afternoon in the park, plan shade and breaks before setting out. [1]
The map preserves the agency's October 2 weekend outlook. The linked bulletin carries the newer October 3 details; both are dated snapshots, so recheck the live advisory before travelling. [1][2]
Take it further
Check the advisory for your destination Public NWS forecasts; no account required. Enter the destination city or ZIP code. At publication, San Francisco's advisory ends Sunday, October 4 at 10 p.m. PDT; the inland group ends Monday, October 5 at 10 p.m. PDT. Recheck for changes.
Sources & details 2 sources
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Paste the brief into your voice app to discuss this reporting.Revised 4 October 2026. Reporting and visuals refined. Original source dates and prior checks retained.
Reporting sources
- NWS · Bay Area heat-advisory bulletin
October 3, 2026, 2:02 a.m. PDT. CAZ006 includes San Francisco, ending October 4 at 10 p.m. PDT; the larger inland zone group ends October 5 at 10 p.m. PDT. This URL updates with current warnings.
- NWS San Francisco Bay Area · forecasts and source map
Checked October 3. Weekend graphic is visibly dated Friday, October 2. Enter a city or ZIP code for the relevant local forecast; the office's overview covers varied coastal and inland climates.
Images & figures
NWS weekend outlook, issued October 2. The October 3 bulletin confirms San Francisco's Sunday-night end time and a Monday-night end for many inland zones. This saved map is a dated forecast, not live conditions.
NOAA / National Weather Service, San Francisco Bay Area · Source · Usage terms