Our rainy season is dragging on longer than usual this year, and I keep deluding myself into thinking I'm going to get a dry day. Three times in the last two weeks I've taken the bike with race tires and no fenders out on a dry morning only to come home in a steady rain with my back and legs covered in road grit. We've had at least some rain every day for the last 20. Between April and May it rained 43 out of 61 days and we're 4 for 4 in June. I'm ready for it to stop now.
That said, riding in the rain once in a while is nice as long as you're prepared and it isn't cold and windy. Nothing drains your will to live like riding into a strong headwind on a 35 degree day in a constant downpour.