It never rains but it pours
What's the meaning of the phrase 'It never rains but it pours'?
When troubles come they come together.
What's the origin of the phrase 'It never rains but it pours'?
A proverbial phrase. The origin is unknown but the phrase itself was known by the early 18th century; for example, this item from a work by John Arbuthnot, 1726:
It cannot rain but it pours; or London strow'd with rarities.
See also: the List of Proverbs.