I can only think of a couple of things - I think it’s important for the couple to agree on where they want to live in terms of climate. If one person is thinking Florida and someone else is thinking Boulder, CO, then there might be a problem
Weather affects things like the commute to work and to school, for kids. Some people are not comfortable driving in the snow for example and probably wouldn’t like to live in a place where the winters are harsh. Other people find it hard to drive in the rain or fog.
Weather also affects vacations. If one person wants to go to the beach for vacation and the other person wants to go to the mountains, where there are not that many people around, they need to work it out.
I think it’s also important for the couple to discuss what the weather was like where they grew up and if they were happy with that or not, and if not, do they have strong enough feelings that it’s worth moving.
It can be easy to feel trapped in a place by finding work, schools, and a church there while not thinking about the weather, so it may be important to factor that in at the beginning of the decision-making process, as the couple is thinking about their marriage.
Personally I can’t think of any problems.