1. On July 13, 1971, the National Weather Service recorded the highest temperature ever recorded in Oklahoma at 120 degrees Fahrenheit in the small town of Tipton.

2. In 1900, the first State Fair of Oklahoma was held in Oklahoma City on July 13. The fair showcased agricultural and industrial exhibits, as well as carnival rides and attractions.

3. On July 13, 1943, the Oklahoma Shipyard near Tulsa launched its first Liberty ship, a type of cargo ship built during World War II to aid in the war effort.

4. On this day in 1905, the first oil well was discovered in the state of Oklahoma, known as the Nellie Johnstone No.1. This sparked the state's oil boom, which brought tremendous economic growth and prosperity to the region.

5. In 2020, on July 13, the Oklahoma City Thunder basketball team resumed their season in the NBA "bubble" in Orlando, Florida, after the season was halted due to the COVID-19 pandemic.