"Station: Cumberland 2, MD". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991-2020). National Oceanic and Atmospheric Administration. Archived from the original on April 8, 2023. Retrieved June 16, 2021.
"Station: Cumberland 2, MD". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991-2020). National Oceanic and Atmospheric Administration. Archived from the original on April 8, 2023. Retrieved June 16, 2021.