With prolonged stretches of at-times extreme heat, nobody would deny it's been hotter than normal in southern Ontario — and warmth extends to the waters of the Great Lakes. The week of July 6-10th in particular featured one of the greatest anomalies so far this season, with temperatures trending 5-10 degrees above normal. And while surface water temperatures have subsided slightly since, they are still generally trending 2-3 degrees above normal.
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