Adelphi Weather Today

Adelphi is a small unincorporated community located in Prince George’s County, Maryland in the United States. Adelphi is located in a moderate climate zone and experiences hot and humid summers with mild winters. The average temperature year round is around 60 degrees Fahrenheit (15.5 degrees Celsius) with an average high of around 75 degrees Fahrenheit (24 degrees Celsius) and an average low of around 40 degrees Fahrenheit (4.5 degrees Celsius). The highest recorded temperature in Adelphi was 103 degrees Fahrenheit (39.4 degrees Celsius) in July and the lowest recorded temperature was -9 degrees Fahrenheit (-22.8 degrees Celsius) in January. Precipitation is fairly steady throughout the year, with an average of around 42 inches (106 cm) annually.