"When I dropped her off, I mean, I just lost it," he revealed. "And then I had to drive home all by myself… I was crying the whole time."
He and wife Faith Hill share three daughters together: Gracie, 25, Maggie, 24, and Audrey, 21.
TIM MCGRAW, FAITH HILL CELEBRATE DAUGHTER MAGGIE'S BIRTHDAY IN NYC
Tim McGraw opened up about the emotional process of moving his daughter to Los Angeles. (Tim McGraw/Instagram)
About his daughters, McGraw admitted it was an adjustment for him and Hill to have them out of the house.
"It was tough at first, you know. I mean, it's always harder on Mom than it is on Dad, I think. But… there were a lot of tears," he said.
Tim McGraw and Faith Hill pose with daughters, from left, Maggie, Audrey and Gracie at the Time 100 Gala in 2015. (Kevin Mazur/Getty Images for TIME)
Despite the change, McGraw revealed it led to a new song on his upcoming 17th studio album.
"In fact there's a song on my new album coming up that guitar player Bobby Minner wrote, 'cause I called him when I was driving back from dropping Gracie off, and was just sort of having a heart-to-heart about dropping my daughter off," he said of the tune.
"It's based on my trip… It's a good one," he added.
Tim McGraw performs with his daughter Gracie McGraw in Nashville. (John Shearer/Getty Images for Big Machine Records)
Despite maintaining a relatively private family life in their nearly 27-year marriage, both McGraw and Hill have shared the joys of being a parent to their social media accounts.
In January, Hill shared a silly video of McGraw dancing in the back seat to the hit song "good 4 you" by Olivia Rodrigo.
"This is a rare, very rare look into a side of my husband that only his girls and I get to see," she wrote on Instagram.
McGraw's latest single "Standing Room Only," was just released.