View gallery Image Credit: Getty Images Bob Weir, the guitarist and a founding member of the Grateful Dead, died on January 10, 2026. He was 78. News of his death was announced via his website that day, with a statement noting that he was surrounded by "loved ones" on his last day. "It is with profound sadness that we share the passing of Bobby Weir," the statement read. "He transitioned peacefully, surrounded by loved ones, after courageously beating cancer as only Bobby could." Below, learn what Weir's cause of death was and more about his final months.