Abstract: A utility door assembly is provided for mounting on the side of a recreation vehicle, which includes a rain deflector over the door that minimizes the leakage of rain through the top of the door. The deflector includes an upper surface extending at a downward-outward incline of at least 60.degree. from the horizontal, and merging with a lower surface that extends in a concave curve that is progressively more horizontal at progressively outward locations, with the bottom of the deflector surface lying outward of the door and ending in a sharp corner. Raindrops which have impacted the vehicle and are flowing downwardly along the side are directed downwardly and outwardly so they tend to fly away from the outer edge of the deflector instead of flowing around it and leaking in through the top of the utility door.