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.
(..) - I don't believe this. - Grandpa's here. We'll be through in a moment. Who told you about this? How's Grandma? She's a bit under the weather, I'm afraid. It's a shame, she was so much looking forward to seeing you. - Perhaps next time, if she feels up to it. - GRANDPA: Absolutely. (..)2008 The Boy in the Striped Pajamas