I've never headed out to the field with rain already coming down, but in FL it rains often this time of year like Seattle year 'round, and we get caught landing in rain anyway. A club member here flies in the rain on purpose with good results he says. He swears he's never had a problem, but his Monokote sure takes a beating. If there is a loose spot, it's coming off. Common sense would say not to do this, but his reply is "why do we have this roof cover over the picnic tables then?" I've read nothing in the AMA guidelines forbidding it, and scale planes fly in it routinely. With the wing on, the electronics stay dry in our case as they are mounted inside the plane, and most wrap their receivers anyway. If you use a mini van and don't have a covered area, under the raised tailgate is a dry spot to fly under so you don't get wet. You have to protect the transmitter, saran wrap it.

I'd like to know how Seattle pilots ever fly when it's NOT raining!