Station: Bethany, MO. U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991-2020). National Oceanic and Atmospheric Administration. [2021-07-28]. (原始内容存档于2023-10-08).
Station: Bethany, MO. U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991-2020). National Oceanic and Atmospheric Administration. [2021-07-28]. (原始内容存档于2023-10-08).