An outdoor light assembly comprising: a light fitting (5) having a threaded opening; a cover (7) having an opening (43) aligned with the threaded opening; a fastening member (51) comprising a threaded shaft disposed in the threaded opening, a head disposed in the opening, and a collar engaging an inner side of a top wall of the cover; and mutually cooperating securing means (41, 47) between the light fitting and the cover. The fastening member can be rotated thereby exerting a force on the cover to urge this away from the light fitting, which force allows to place and maintain the mutually cooperating securing means in a securing state thereby fixing cover on the light fitting without requiring threads in the cover. The covering can be powder coated and have a same look and finish as the upright support on which the light assembly is to be mounted.