Last year I was in New York City on the hottest three days of the year. It was unbelievably hot and the only thing to do at night was to walk around Times Square in the pouring rain.
I should be used to the heat from Florida, but it was no easier. Nevertheless, the rain and lights created fantastic photo opportunities that are entirely different than those I get back home. A nice effect is how the rainwater creates a reflective sheen on the pavement.
Taking photos at night in a city is a matter of experimentation. With a camera, we have several choices to make. A wide aperture combined with a high ISO allows a type of street photography without a tripod. However, with a tripod, we can take longer exposures if we want to capture light trails. In this case, I just wanted to capture images of the scene without special effects. For me, the most exciting thing was watching people out having fun in the rain; which by the way, was what I was doing also.