Welcome to FunTrivia's Question & Answer section! Ask FunTrivia strives to be the most accurate and complete source for answers to trivia questions on the web. Please cite all facts with citation links or references from trustable sources. Editors continuously recheck submissions and claims. Moderators/Editors:
Lake Superior surface-water temperatures averaged 1 or 2 degrees Fahrenheit below their long-term average at the end of May. According to the new forecast, surface temperatures over the deepest parts of the lakeâbetween 1,000 and 1,300 feetâwill be at least 6 degrees below normal by August and will still be in the 40s.
Lake Erie is the shallowest of the Great Lakes, and therefore it is typically the first to warm up during the spring. Lake Superior had much below average ice cover during the 2011-12 winter, as this chart shows.Click on the image for a larger version.redit: GLERL. OK, so the lakeâs average water temperature is still a bracing 68 degrees, but it's considered downright tropical for the region. As the above chart shows, based on the 30-year average, the lakeâs average water temperature should be in the mid-50s.