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 gave 'Round Midnight its "4-star rating" in March 1963. The rating was given for "new albums with sufficient commercial potential."