As the system moves south this evening, winds will shift to the north-northeast over Lake Superior, leading to lake effect snow along the South Shore. High temperatures are forecast to reach the 20s, and overnight lows will moderate into the single digits to teens above zero. FridaySunny, with a high near 10. TuesdayMostly sunny, with a high near 21. WednesdayPartly sunny, with a high near 24.