A while-in-use cover assembly includes a hood and a base connected to the hood. The base includes a first side wall and a first back wall forming a first cavity with a first opening opposite the first back wall. The hood covers the first opening, the first side wall includes a first side wall edge and a second side wall edge opposite the first side wall edge. The first side wall edge is proximate to the first opening, and the second side wall edge is proximate to the first back wall. The first back wall includes a second opening to a second cavity. A second side wall defines the second cavity and extends from the first back wall from the first opening. The first cavity and the second cavity provide access through the first opening and the second opening to an electrical device coupled to the second side wall.