Superior Electric Beach/Outdoors Report. Here are the current conditions for the Lake Michigan shoreline and Mason County (including Pentwater) as of 11 a.m. today. Lake Michigan water temperatures: Ludington Stearns Park: 65 F Ludington State Park (Big Sable Point): 66 F Summit Park: 65 F Pentwater: 65 F Afternoon weather: Ludington: Slight chance of isolated thunderstorms. Partly cloudy becoming mostly…