Superior Electric Beach/Outdoors Report. Here are the current conditions for the Lake Michigan shoreline and Mason County (including Pentwater) as of 10 a.m. today. Lake Michigan water temperatures: Ludington Stearns Park: 60 F Ludington State Park (Big Sable Point): 63 F Summit Park: 61 F Pentwater: 63 F Afternoon weather: Ludington: Temperatures reaching 73 degrees F. Mostly cloudy;…