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. today. Lake Michigan water temperatures: Ludington Stearns Park: 60 F Ludington State Park (Big Sable Point): 62 F Summit Park: 60 F Pentwater: 60 F Afternoon air temperatures: Ludington and Pentwater: Sunny with highs reaching 80 degrees F.…