In what way are cities microclimates? A. Cities are warmer than the areas immediately around them.
B. Cities have more precipitation than rural areas do.
C. Cities are smaller than the areas around them.
D. Cities have lower atmospheric pressure than rural areas do.

The answer is A.

This is because cities contain more people in one area, thus they contain more businesses like restaurants, cafes, etc. that produce more overall exhaust than say a more rural town with fewer people. Light pollution will also be largely greater over a city as opposed to a rural town.

tropical storm katrina, and it made landfall between miami and fort lauder-dale, florida, as a category 1 hurricane (a storm that, on the saffir-simpson scale, exhibits winds in the range of 74–95 miles per hour [119–154 km per hour]). sustained winds of 70 miles per hour (115 km per hour) lashed the florida peninsula, and rainfall totals of 5 inches (13 cm) were reported in some areas. the storm spent less than eight hours over land. it quickly intensified when it reached the warm waters of the gulf of mexico.

this should answer you're question