How is “right as rain” used?

In Monty Python's The Meaning of Life (1983), one line is: “As right as rain in a couple of days.”

Which movie is “right as rain” from?

The clip at the top of this page is from Monty Python's The Meaning of Life (1983).

in excellent health or condition

informal · Se oye en 11 películas

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in excellent health or condition
... you'll feel right as rain.

Definiciones del Oxford Advanced Learner's Dictionary, 9.ª edición

As right as rain in a couple of days.

En 8 películas · n.º 1