of or higher have only occurred four times since record-keeping began in 1888. During this period, more than half of the days bring afternoon thunderstorms and sea breezes that cool the air for the rest of the day. Late in the season, there is also a chance for a tropical storm or hurricane to strike. The area was unusually hard-hit in 2004 and 2005, when Hurricanes Frances, Jeanne and Wilma caused property damage and power outages. The dry season—November through April—is warm and mostly dry, with temperatures remaining fairly commonplace even from December through February. Occasionally, a stronger cold front can lower daytime temperatures to around , the annual mean minimum max temperature, and lows to around . Freezes are rare; the most recent was in 2010. The dry season can also bring about potential for drought during hotter, drier seasons. Demographics 2020 census Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos can be of any race 2010 Census As of the census of 2010, there were 54,179 households, out of which 20.8% were vacant. As of 2010, 22.4% had children under the age of 18 living with them, 34.3% were married couples living together, 13.6% had a female householder with no husband present, and 47.5% were non-families. 37.6% of all households were made up of individuals, and 11.8% had someone living alone who was 65 years of age or older. The average household size was 2.26 and the average family size was 3.02. As of 2000, the population was spread out, with 21.3% under the age of 18, 9.8% from 18 to 24, 31.5% from 25 to 44, 21.4% from 45 to 64, and 16.0% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 97.3 males. For every 100 females age 18 and over, there were 94.8 males. In 2000, the median income for a household in the city was $36,774, and the median income for a family was $42,074. Males had a median income of $30,221 versus $26,473 for females. The per capita income for the city was $23,188. About 14.5% of families and 18.9% of the population were below the poverty line, including 29.2% of those under the age of 18 and 14.8% of those ages 65 and