Superior Electric Beach/Outdoors Report. Here are the current conditions for the Lake Michigan shoreline and Mason County (including Pentwater) as of 10:30 a.m. Lake Michigan water temperatures: Ludington Stearns Park: 50 F Ludington State Park (Big Sable Point): 49 F Summit Park: 53 F Pentwater: 53 F Afternoon air temperatures: Ludington: 69 degrees F with partly cloudy skies decreasing…