Seatemperature.org says the average temperature of Lake Ontario is 41.9 degrees Fahrenheit in May. It rises in June to 58.8, and 70.5 in July, before topping out at nearly 73 degrees in August.

Lake Ontario has an average surface water temperature of 51.9 degrees F now. The warmest Lake Ontario has been on November 17 was 51.6 degrees F back in 2016. Lake Ontario is just fractionally ...

Lake Ontario, one of the region's five Great Lakes, is the only one that doesn't border Michigan. Here's what to know.

Lake Ontario is now imperilled because of the way we’ve come to rely on it. In the 19th century, we , dammed and polluted tributaries, dug canals and obliterated fish species in the region.

By surface area, it’s Lake Ontario, which is “only” 193 miles long and 53 miles across at the widest point. Need a break? Play the USA TODAY Daily Crossword Puzzle.

Nor could a ship “outrun a storm on Lake Ontario like you could on an ocean,” he added. “There’s really nowhere to go.” The Philip Becker, a steam-powered tugboat that sank on Nov. 17, 1879.