The win—her second straight in two days—boosted her beyond the mark of 62 set by Austria's Annemarie Moser-Proell between 1970-80.
"It’s amazing—words can’t describe my feeling," said Vonn. "Sixty-three feels incredible. I’m really proud of what I’ve done and I’m excited about the future."
Team officials said Vonn skied relaxed and tactically strong with the weight of tying the record off her shoulders after Sunday's downhill win.
"I definitely felt like the pressure was off today, I just wanted to go out and have a good run," she said. "I was relaxed and cool and I think it showed in my skiing. I honestly didn’t know if I would be fast enough, I made some mistakes, I was shocked I was in the lead but very, very happy."
Vonn now has 108 World Cup podiums. She won her first World Cup—a Lake Louise downhill in 2004—at the age of 20.
In the race teammates Julia Mancuso finished 12th, Laurenne Ross 17th, Stacey Cook 19th, Alice McKennis 31st, Jackie Wiles 36th, and Katie Ryan 38th.