Sometimes when I leave my world and come back, it'll be raining when I join back, even though it was clear when i left. When this happens, sleeping won't make the rain stop, and setting the weather via commands dosen't work either. The only way to get rid of the rain is to do something that would normally stop the rain, then leave, and it'll be clear when I join back. I'm not sure how to replicate it, as it seems to happen randomly. Also, when this happens, the sky may turn dark enough to be a thunderstorm, even though it isn't a thunderstorm.