Darien - Illinois

Darien is a city located in Illinois. With a current population of 21,840, it is the 112th largest city in Illinois and the 1722nd largest city in the United States. Spanning over 6 miles, the city has a population density of 3,520 people per square mile.

January has the coldest nighttime temperatures for Darien with an average of 15.0°F. July, on the other hand, is easily the hottest with an average high-temperature of 83.8°F. Furthermore, August is the month with the most rainfall while February still proves to be the driest.