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: 50 F Ludington State Park (Big Sable Point): 50 F Summit Park: 51 F Pentwater: 52 F Afternoon air temperatures: Ludington: 66 degrees F with partly cloudy skies increasing to…