Superior Electric Beach/Outdoors Report. Here are the current conditions for the Lake Michigan shoreline and Mason County (including Pentwater) as of 11:30 a.m. Lake Michigan water temperatures: Ludington Stearns Park: 65 F Ludington State Park (Big Sable Point): 64 F Summit Park: 63 F Pentwater: 62 F Afternoon air temperatures: Ludington and Pentwater: Mostly sunny at 79 degrees F; humidity: 69%;…