In 1926, Winters married the poet and novelist Janet Lewis, also from Chicago and a fellow tuberculosis sufferer. After leaving Colorado he taught at the University of Idaho and then began the doctoral program at Stanford University. He remained at Stanford after receiving his PhD in 1934, becoming a member of the English faculty and living in Los Altos for the rest of his life. He retired from his Stanford position in 1966, two years before his death from throat cancer. His students included the poets Edgar Bowers, Turner Cassity, Thom Gunn, Donald Hall, Philip Levine, Jim McMichael, N. Scott Momaday, Robert Pinsky, John Matthias, Moore Moran, Roger Dickinson-Brown and Robert Hass, the critic Gerald Graff, and the theater director and writer Herbert Blau. He was also a mentor to Donald Justice, J.V. Cunningham, and Bunichi Kagawa.