humid subtropical climate (Köppen Cfa) and has many characteristics of a city in the Upland South. Summers are warm and humid, with a daily average in July of and temperatures reaching on an average of 40 days annually. Winters are generally cool with mild periods, though extended stretches of cold can occur. Cairo's winter is typically mild by Illinois standards, as the January daily average is . Precipitation is spread relatively uniformly throughout the year. On average, Cairo's low elevation and proximity to the Mississippi and Ohio rivers prevent strong winter lows and plunging temperatures; however, during the summer months, those similar features retain heat and humidity, creating muggy conditions. 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. As of the 2020 census there were 1,733 people, 828 households, and 377 families residing in the city. The population density was . There were 1,036 housing units at an average density of . The racial makeup of the city was 25.33% White, 68.96% African American, 0.40% Native American, 0.63% from other races, and 4.67% from two or more races. Hispanic or Latino of any race were 1.15% of the population. There were 828 households, out of which 48.31% had children under the age of 18 living with them, 23.07% were married couples living together, 20.29% had a female householder with no husband present, and 54.47% were non-families. 52.29% of all households were made up of individuals, and 23.55% had someone living alone who was 65 years of age or older. The average household size was 3.42 and the average family size was 2.16. The city's age distribution consisted of 21.7% under the age of 18, 9.3% from 18 to 24, 16.9% from 25 to 44, 28.8% from 45 to 64, and 23.3% who were 65 years of age or older. The median age was 47.4 years. For every 100 females, there were 87.1 males. For every 100 females age 18 and over, there were 94.5 males. The median income for a household in the city was $27,661, and the median income for a family was $31,280. Males had a median income of $14,464 versus $21,188 for females. The per capita income for the city was $19,661. About 32.9% of families and 36.2% of the population