A North Pacific storm system will slowly move over San Diego County Friday with rain and mountain snow possible late in the evening. Most precipitation is expected early Saturday morning into Saturday afternoon with rain likely for much of the county and snow possible above about five thousand feet. As the cold winter storm moves east, a high-pressure system will fill the void, bringing with it warmer weather for the beginning of next week. The windy, wet conditions should arrive by Friday evening and last through Saturday evening, then warmer, drier weather is on tap for early next week.