"Station: Cincinnati Northern KY AP, KY". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Archived from the original on February 6, 2024. Retrieved May 9, 2021.
"Station: Cincinnati Northern KY AP, KY". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Archived from the original on February 6, 2024. Retrieved May 9, 2021.