It’s pretty obvious that generally, hikers wish for a nice and clear weather. But it does not mean that if there is a rain in the forecast we should cancel our plans. Hiking (and camping!) in the rain may be fun and a chance to see the area in new light. There is also more chance to have the trail just to yourself as a number of potential hikers may change their plans.
Rain quite often comes with gloomy and moody clouds, creating a dramatic stage for your adventure. Of course, quite often it comes also with thick white fog and horizontally falling rains and hail... but that also can be quite breath-taking.