The ideal temperature range for most pet turtles is between 75-85 degrees Fahrenheit (24-29 degrees Celsius). It is important to provide a temperature gradient in their enclosure, with a basking area around 90-95 degrees Fahrenheit (32-35 degrees Celsius) and a cooler area around 70-75 degrees Fahrenheit (21-24 degrees Celsius). Ensure that the temperature remains consistent and use a thermometer to monitor it regularly.