A connector bracket for interconnecting roof windows mounted adjacent to each other in an inclined roof structure, one roof window being located below the other roof window when seen in the direction of inclination of the roof structure, is disclosed. A first connecting section of the connector bracket extends in a first direction from a centre section of the connector bracket and is configured for being connected to the mounting bracket on the first roof window in a pivot connection. A second connecting section extends in a second direction from a centre section of the connector bracket and is configured for being connected to the mounting bracket on the second roof window in a fixed connection. The first and second directions are non-parallel. A roof window arrangement where roof windows are interconnected by such a connector bracket and a method for mounting at least two roof windows are also disclosed.