Lake Michigan sizzles!August 4th, 2010 at 11:01 pm by Bill Steffen under Bill's Blog, Weather
The water temperature at the buoy in the middle of Lake Michigan (40 miles west of Holland) reached 80° last Sunday afternoon. That’s only one degree from the all-time record mid-lake buoy temperature of 81° set on August 18, 1995. We have 30 years of water temperature records from the buoy. Not only has this been a warm summer, but relatively light winds over the past week have allowed the surface water to warm in the strong, summer sunshine. With warmer than average temperatures expected for the next couple weeks, it’s possible we could set an all-time record yet this month. All of the Great Lakes are unusually warm, with Lake Superior water temperatures in the mid 60s. The coldest surface water in Lake Michigan is at the south end of the lake. That’s because the prevailing south wind causes upwelling of colder water there. That’s why you don’t see a lot of people swimming on the beaches of Indiana. They come north to Michigan where the water is warmer. The warm water of the lake could mean a good shot of lake-effect snow when the Arctic air finally arrives in late autumn. The beach water temperatures on Wednesday were 80 at Muskegon St. Park and 79 at Grand Haven.