Temperature - For Greek, Russian and Hermann’s tortoises, their daytime temperature on the cool side of their habitat should be between 72-80°F (22-27°C) and 90-95°F (32-35°C) on the warm side. At night, it should be 70-80°F (21-27°C). For a red-footed tortoise, the daytime temperature on the cool side of their tortoise terrarium should be somewhere between 70-85°F (21-29°C) and their basking spot should be anywhere from 90-95°F (32-35°C). Their nighttime temperature should be 70-80°F (21-27°C). Use two thermometers, one on the cool side, the other on the warm side, to track the temperature.