Superior Electric Beach/Outdoors Report. Here are the current conditions for the Lake Michigan shoreline and Mason County (including Pentwater) as of 10 a.m. Lake Michigan water temperatures: Ludington Stearns Park: 39 F Ludington State Park (Big Sable Point): 47 F Summit Park: 41 F Pentwater: 47 F Afternoon air temperatures: Ludington: Partly cloudy, becoming mostly cloudy by mid-afternoon; 61…