I was once a fair weather photographer. I would watch the weather all the time. If it was going to rain I would do something different. Some of my best image has happened, in or during or right after a rain. I don’t use a housing when I’m in the rain, I just use a golfing umbrella for both me and my camera, keeps us dry. Most cameras’ today can get a little wet. I get little towels and put them in my camera bags. Best towels are the ones you get for hiking.