The Chronicle's forecast calls for temperatures to rise into the mid-80s on Monday and Tuesday in San Francisco, with a chance at near-90. Phone apps show less extreme temperatures.

The National Weather Service forecast for the greater San Francisco Bay Area for Sunday calls for mostly sunny to mostly clear skies. Daytime highs will be mostly in the low to high ...

San Francisco remained mostly sunny Tuesday morning as rain held off and temperatures shot up, well past what had been expected. Previous forecasts indicated the city would remain in the upper 50s to ...