AccuWeather.com: Includes 15 day weather forecasts, wind chill or heat index, and the National Weather Service forecast for the surrounding area.
Bay Area Weather: From Bayinsider.com, updated five-day forecasts for SF and the Bay Area with Doppler radar photos
FogWatch.com: Provides news and information on fog conditions in western San Francisco.
MaximumWeather - Forecast for San Francisco, California: Offers a weather forecast for city with current conditions and four day outlook.
The Weather Channel - San Francisco, CA: Local weather, forecasts and satellite maps.
Weather Underground: San Francisco Forecast: Includes detailed forecasts, satellite imagery, marine forecast, weather advisories.
WxUSA - San Francisco: Links to current conditions, forecasts, radar, maps, hurricane, weather cams, and kid's weather.