The weather and beach report for Mason County is sponsored by Superior Electric of Ludington: 231-845-0126; www.supelectric.com. Lake Michigan surface temperature at Stearns Park beach: 54 F. Friday, June 20, 2014. Periods of rain. A few rumbles of thunder possible late. High 67 F. Winds SE at 10 to 15 mph. Chance of rain 70%. Rainfall may reach one inch. Sunset: 9:32…