On November 28, 2006, "Southern Weather" was made available for streaming. In January 2007, the band went on their first tour, a U.S. headlining tour with support from Forgive Durden and Classic Case. "Say This Sooner" was released to radio on February 13. On February 28, "I Mostly Copy Other People" was made available for streaming.Southern Weather was released on April 3 through Tooth and Nail. Following this, the band supported Saves the Day and Say Anything on a small number of dates. In April and May, the band supported Paramore on their tour of the U.S. From late July to mid July then late July to late August, the band went on the 2007 edition of Warped Tour.
Following Warped Tour's conclusion, the group went on a headlining tour in August and September, with support from Meg & Dia and former Beloved frontman Josh Moore. A music video was released for "Southern Weather" on September 26 and the song was released to radio on October 2. In November, the group supported the Starting Line and Paramore on their co-headlining US tour. The band performed alongside the Starting Line for a few shows in December. In May and June 2008, the band went on a US tour alongside Emery, Envy on the Coast and Army of Me.
The album debuted at No. 39 on the U.S. Billboard 200, selling about 29,000 copies in its first week. As of July 11, 2007, the album has sold 123,972 copies in the U.S. "Say This Sooner" has also been released to mainstream radio and has reached as high as No. 7 on Modern Rock Tracks.
Aaron Gillespie - lead vocals, lead guitar, rhythm guitar, drums, percussion, piano, keyboards, programming, tambourine, bass guitar (all songs except on "I Mostly Copy Other People" and "Southern Weather")
Aaron Sprinkle - keyboards, additional guitars, vocals on "Never Say I Told You So"
Kevin Suggs - pedal steel guitar
Matt Slocum - horns, string arrangement
John Painter - cello
The Youth Group at Calvary Fellowship - choir on "Amazing Because It Is"
Kenny Vasoli - vocals on "I Mostly Copy Other People", bass guitar on "I Mostly Copy Other People" and "Southern Weather"