Hundreds of people braved the cold and got up early. ABC7's Spencer Christian joined Sam during the broadcast. Members of Beach Blanket Babylon also performed.
In New York, GMA unveiled a new San Francisco themed window that will be on display in Times Square. It shows fog, the Golden Gate Bridge, cable cars and some of the city neighborhoods like China Town and the Castro.
The event and holiday window are part of an effort to promote tourism in San Francisco.