 With a period of record dating only back to 1953, the highest recorded temperature was on June 30, 2012, while the lowest recorded temperature was on January 20–21, 1985.As of the census of 2000, there were 38,978 people, 16,456 households, and 10,252 families living in the city.The population density was 1,083.6 people per square mile (418.4/km2).