Yea water bottles. Because it NEVER rains, the sun never sets, and calendars are non existent in this &#%$& excuse of a Faerun world.
You see, BG3 actually takes place in a Rivellon pocket plane which looks like Faerun but ACTS like Rivellon. Quite an amazing illusion.
I don't recall weather making massive differences in the other baldurs gate games.
Well, when it thunderstormed, you could get randomly hit by lightning. But that was about it. The real-time aspect just made it even funnier how narcoleptic the average Infinity Engine adventuring party was, what with the constant 8-hour power naps.
It'd be cool if the game tracked days on a calendar and had different weather on different days after your Long Rests, but I do not miss the real-time day/night cycle that just made it feel like you had no time for anything before it got dark again.
