The speaker describes how despite the frightening weather with thunder and lightning, she finds it to be a lovely day because she gets to spend it with her loved one. The rain that caught them unexpectedly proves to be a blessing as it brings them together in a cozy and warm scenario.

Meaning of "Isn't This A Lovely Day" by Diana Krall

"Isn't This A Lovely Day" portrays the idea of finding beauty and joy in unexpected moments and circumstances. The speaker uses the storm and rain as a metaphor for life's challenges and uncertainties, suggesting that as long as they are with their loved one, everything will be okay. The sudden change in weather symbolizes the unpredictability of life, but the speaker finds solace and comfort in the presence of their partner. The song celebrates togetherness, resilience, and the ability to see the silver lining even in challenging situations. It conveys a message of finding happiness in the simple things and cherishing the moments spent with loved ones, no matter the external circumstances.