Maybe I'm an extremist. But I believe that weather sealed lenses should be a standard these days. Even if you don't want to shoot in the rain, you'll benefit. Your camera sensor will be clean. Your entire package will be more durable.
Fujifilm's Medium Format platform has come on in leaps and bounds since the GFX 50S was introduced. The platform now has three excellent cameras to its name, and now thanks to the Fujifilm GF 50mm f3.
Being able to shoot outside when the weather isn't the best can yield some truly spectacular shots. From reflections of lights hitting the street, to capturing falling snow, and from the light that appears at the back end of a storm, to capturing menacing clouds or lightning, the weather can help create some truly dynamic images, but you need to have the right gear to go out and play in the elements.
Any photographer who has been practicing landscape photography for a while will likely have many stories about being caught out in 'the storm of the century'. I know I have my tales. The weather can can change in an instant.