I try to stay out of the rain, but sometimes the urge to fly overwhelms my caution, and I end up with a few drops. For those concerned about the motors being open - brushless motors can operate underwater, so that isn't a primary concern. The fact that we're talking about rain water is also significant as water, in and of itself, is not conducive. The impurities in water are what allow it to conduct electricity, thereby producing a short circuit. Rain water is near pure as it came about in a process of distillation. By the time it hits your phantom, it is no longer pure, but much moreso than salt water or tap water... The point is - brushless motors can operate submerged, but you need to think about where the water is going to go after entering your phantom motor, and pure water isn't going to ruin your electronics... but it will, however, mess up your lens temporarily as well as other parts that are susceptible to water damage, and can, if you're in an area (or receive weather from an area) of high pollution, mess up your electronics via short. The phantom 4 is totally closed on the upper housing. So your odds of being OK are very high with operation in moderate rain for a short period of time. For the guys in older birds with top vents and close proximity to cities (pollution), probably not a good idea.