A gutter cover for a rain gutter includes a U-shaped rear portion, a forward edge portion, and a perforated horizontal central portion spanning between the rear and forward edge portions. The forward edge portion includes a web extending upwardly from the central portion, and a covering flange and downward hooked edge portion extending forwardly from the web. The hooked edge portion having an end positioned for engagement with the underside of a front lip of the gutter.