The ornamental design for a rainbarrelcover, as shown and described.
FIG. 1 is a front elevation view of a rain barrel cover according to the present invention.
FIG. 2 is a top view of a rain barrel cover according to the present invention.
FIG. 3 is a side elevation view of a rain barrel cover according to the present invention.
FIG. 4 is a bottom view of a rain barrel cover according to the present invention.
FIG. 5 is an environmental view of a rain barrel cover according to the present invention positioned to overlie a rain barrel; and,
FIG. 6 is an exploded environmental view of a rain barrel cover according to the present invention overlying a rain barrel.
The broken line showing of a container in FIGS. 5 and 6 is included for the purpose of illustrating environment and forms no part of the claimed design.