For a digitally enhanced version use this link: https://youtu.be/KllSjF4uCDY
"Isn't This a Lovely Day?" is a popular song written by Irving Berlin for the 1935 film Top Hat, where it was introduced by Fred Astaire in the scene where his and Ginger Rogers' characters are caught in a gazebo during a rainstorm. The lyric is an example of a song which turns a bad situation into a love song, a common style for Irving Berlin, as in I've Got My Love to Keep Me Warm and Let's Have Another Cup of Coffee.
His 1935 version was assessed as reaching the No. 3 spot in the charts of the day