In the wet, slow down a tad. Corners should be taken with less lean angle, starts and stops with more care. Aside from those you should not have many issues. My '15 650 XT is my only form of transport and I routinely ride in the rain. Skill wise, not too difficult. Snow holds its own fun. My biggest worries are two - seeing through a rained-up visor, and watching for dummies in cars who are driving an attitude instead of their conveyance.
Being slow doesn't make a boring bike. I had a R1 which I thought was boring. Boring is a bike that doesn't speak to you. If you like what your bike is saying let it's voice take you to far flung places. - Vertical C