Scott Yanow, writing on Allmusic.com gave 'Round Midnight two and a half stars out of five. Yanow commented of Carter in this period that "...Her chance-taking style and unusual voice were mostly ignored and it would not be until the late '70s that she was finally "discovered."...Her style was a lot freer than it had been in her earlier records but was still more accessible than it would be. Her repertoire...was already becoming eclectic."
Billboard magazine gave 'Round Midnight its "4-star rating" in March 1963. The rating was given for "new albums with sufficient commercial potential."