A waste bin cover system for protecting a waste bin from interference from freezing water includes a waste bin with a lid for opening and closing an aperture at a top end of the bin. A cover is deployable over the lid and a rim of the waste bin when the lid is closed to protect the waste bin from interference from freezing water. The cover has a pair of flaps in front which are removably couplable to each other to secure the cover to the waste bin.