The hottest temperature recorded in Alamo Lake State Park was  on July 29, 1995, while the coldest temperature recorded was  on December 26, 1990, January 15, 2007, January 4–5, 2019, and January 22, 2023.
The highest temperature recorded in Alamo Lake State Park was on July 29, 1995, while the lowest temperature recorded was on December 26, 1990, January 15, 2007, January 4–5, 2019, and January 22, 2023.