This slice of old-fashioned radio pop is the first single from 100 Miles From Memphis, the seventh studio album from American singer and songwriter Sheryl Crow. The album was written and produced by Crow with co-producers Doyle Bramhall II and Justin Stanley. The team wrote the music first and left Crow to pen the lyrics afterwards, which she told Billboard Magazine "was like having homework."
Crow explained on her website concerning this song, "I wanted to experiment with writing something simple and positive. The feeling of a great, solid love—not just a new love, but something everlasting."
Crow commented on the song's music video, "My friend Keith Megna made an amazing 'Summer Day' video for us - inspired by a great day in Central Park and our actual studio recording of the song."
Crow told Spinner about the song: "I thought I would collaborate on this one with Justin. The track is really uplifting. Our objective was to write something that was wholly positive and about optimism. This what summer is to me, metaphorically, especially that first day of being out of school and the excitement about what's ahead. And particularly this moment in our historical state, with the [BP] oil spill and all the wars and the political fighting, it's nice to have a song that is uplifting and it makes you feel useful and giddy."