New York City a century hence will be a very different place. But you can describe it with this phrase: much too hot, much too wet and partly underwater.

A report by the New York City Panel on Climate Change painted a grim picture of New York 100 years from today. In essence, it said the higher temperatures; much higher sea levels and rampant flooding predicted for the city will all be triggered by climate change.

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The science behind these predictions is grim. Climate scientists expect average temperatures in New York to jump nearly 9 degrees; rainfall could increase 13 percent and sea levels would increase by over two feet, said The New York Daily News.

The worst is expected to begin by the 2050s. Temperatures are expected to climb 4.1 degrees to 5.7 degrees by the 2050s. New York could bake under five to seven heat waves a year compared to two today.

More bad news: the number of days with temperatures at over 90 degrees could double. Temperatures are expected to exceed 100 degrees three to five days a year. This phenomenon occurs less than once a year today.

And more bad news: by the 2080s, the city could be 8.8 degrees hotter than the current average of 54 degrees.

The ocean will also add to the coming misery faced by future New Yorkers.

The city's climate panel predicts sea levels will increase 11 inches to 21 inches by the 2050s. That level will rise to 18 inches to 39 inches by the 2080s. And by 2100, the level will rise by 22 inches to 50 inches.

The worst case scenario envisions an increase of over 6 feet if climate change remains unchecked.

And, of course, sea level rise will necessarily mean more floods, some worse than Sandy. The flood zone is expected to double in size by 2100, and cover 99 square miles of the city.

The huge floods now anticipated every 100 years could occur every eight years if the worst sea-level increases come to pass.

Queens will be the most at risk for floods. Next will be Brooklyn.

"We expect temperatures to increase, precipitation likely to go up as well, and an acceleration of sea level rise," said Radley Horton, a Columbia University scientist and panel member. "Sea level rise alone is going to increase the flood risk."

The sea level in New York has rose by a foot over the last century, a faster increase than the rest of the world. Temperatures have gone up 3.4 degrees.