Water temp. estimation question?

Question

I know that you can estimate the water temps. by taking 5 nightly lows and averaging it out but, What happens when you have this unusual cold front ? How much will it affect the water temps.? Does it hold true for rivers as in lakes? Any help would be appreciated.

Answer 1

The large NYC Metro newspapers have the water temperatures in the Atlantic Ocean and surrounding estuaries.Since the Atlantic Ocean is a huge body of water, it
will take multi-day cold front to change the ocean water temperature.