The rocker wed photographer Jamie Wachtel at the couple's home in Los Angeles in front of a small group of friends and family.
Wachtel, 35, tells People.com, "We had the most beautiful, heartfelt ceremony. We all cried and laughed. Scott and I are over the moon!"
The bride wore a vintage dress and Weiland, 45, walked down the aisle in a designer suit by John Varvatos. The newly-weds first met on a music video shoot in 2011.
This is the rocker's third marriage and he has two children, Noah, 13, and Lucy, 11, with his second wife, model Mary Forsberg.
The wedding news will be a big boost for Weiland, who has suffered a turbulent few months professionally following his exit from Stone Temple Pilots in February (13). He is currently embroiled in a bitter legal battle with his former bandmates and has voiced his anger after they replaced him with Linkin Park star Chester Bennington.