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. today. Lake Michigan water temperatures: Ludington Stearns Park: 61 F Ludington State Park (Big Sable Point): 67 F Summit Park: 50 F Pentwater: 50 F Afternoon air temperatures: Ludington: Partly cloudy with temperatures reaching 80 degrees F. Isolated…