This may seem a bit odd but does anyone wash their car in the rain? Obviously finishing off drying it under cover.
Our Escape is due for its 3 month check up on Monday and the weather is meant to be wet every day. I like to present my cars looking clean plus it has a few blemishes I want looked at that are best seen when it's clean. (likely from fallout, even though it apparently got detailed and ceramic coated)
I can't see any issues with washing in the rain except weird looks from the neighbours