Ok, I need help. I don't really know how to dress for running in the rain. I'm starting a new running plan this week and while it's supposed to be sunny, it won't stay that way for long (PNW here!). I realized that I really don't know how to dress for running in the rain.

Assume it's about 50F and light rain - what do you wear for your run and does it vary based on how long you'll be out there?

While I assume that I can make my cycling wardrobe work, I'm just not sure how to use the pieces appropriately when it's both chilly and wet. Wet and warm I can figure out. Cold and dry I can figure out. I have no experience with wet and cold and running!

Thanks!