"Station: Grandfather MTN, NC". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Archived from the original on May 12, 2021. Retrieved May 11, 2021.
"Station: Grandfather MTN, NC". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Archived from the original on May 12, 2021. Retrieved May 11, 2021.