Rainfall has been very limited Saturday, but that is about to change. A slow-moving low-pressure system will be moving over the eastern Great Lakes for the next 24 hours. As a result, the probability of rain will be increasing later Saturday evening and for the remainder of the overnight. The rain will be with us for Sunday morning, before tapering to widely scattered showers Sunday afternoon. There is the potential for a quarter to half inch of rain by the end of the weekend.