Climate
The annual precipitation for Aurora is about 40 inches. The record high for Aurora is 111 °F (44 °C), on July 14, 1936. The record low is −26 °F (−32.2 °C), on January 20, 1985. The average high temperature for Aurora in July is 84 °F (29 °C), the average January low is 10 °F (−12 °C).
 On July 17-18, 1996, a major flood struck Aurora, with 16.9 inches (430 mm) of rain in a 24 hour period, which is an Illinois state record, and the second highest ever nationally. Flooding occurred in almost every low lying area, and in the Fox river valley. The flooding was just as bad in Blackberry creek, on Aurora's far west side.
Aurora has not been struck by any major tornadoes in recent history, although they occur in the area annually. The city can still receive heavy snowfall and experiences blizzards periodically.
 Aurora was hit with one of the strongest earthquakes ever to strike Illinois on May 26,1909. It put cracks through chimneys and could be felt 500,000 square miles (1,300,000 km²) around.
In 1906 a tornado went through the Aurora Driving Park, a large recreation/amusement park and race track located where riddle highlands now stands. The tornado hit during the afternoon performance of the Ringling Brothers "Greatest Show on Earth" circus, when the park was crowded . It killed 2 people and injured 22, but the grandstand was still filled for the evening performance.
Geography
Aurora is located at 41°45′36″N, 88°17′55″W (41.759879, -88.298482).[2]
According to the United States Census Bureau, the city has a total area of 39.4 square miles (102.1 km²), of which, 38.5 square miles (99.8 km²) of it is land and 0.9 square miles (2.3 km²) of it (2.26%) is water.
While the city has traditionally been considered as being in Kane County, Illinois (and in fact its downtown is still entirely in that county), Aurora is one of only three cities in Illinois where the city limits actually cover parts of four counties (the others are Barrington Hills & Centralia, Illinois): Kane, DuPage, Kendall, and Will.