McHenry is located in Maryland. McHenry, Maryland has a population of 614.
The median household income in McHenry, Maryland is $46,250. The median household income for the surrounding county is $48,174 compared to the national median of $57,652. The median age of people living in McHenry is 45 years.
The average high temperature in July is 78.4 degrees, with an average low temperature in January of 17.6 degrees. The average rainfall is approximately 47.3 inches per year, with 106.8 inches of snow per year.