They have had their fair share of 'stormy weather' [=they have had many problems] in their marriage.
They are 'fair-weather' friends. [=they are friends when you are successful but not when you fail]
They had to 'weather' [='get through'] some difficult times in the early years of their marriage.
(..) Get the word out to Remus and the others, that Harry is back. Okay, okay! Let's not kill him before You-Know-Who does. ... Do you read? We've a new weather report. Lightning has struck. I repeat: Lightning has struck. What's the fun, Harry? Okay. There's something we need to find. (..)2011 Harry Potter and the Deathly Hallows: Part 2