A watering tank circulating assembly includes a frame submerged in a livestock watering tank. A fluid pump is coupled to the frame to circulate the water when the fluid pump is turned on. In this way the fluid pump inhibits the water from freezing. A heating coil is coupled to the frame to heat the water when the heating coil is turned on, thusly inhibiting the water from freezing. A thermostatic switch is coupled to the frame and each of the fluid pump and the heating coil is electrically coupled to the thermostatic switch. The thermostatic switch turns on each of the fluid pump and the heating coil when the temperature of the water drops below a trigger temperature. Additionally, the thermostatic switch turns off each of the fluid pump and the heating coil when the temperature of the water rises about the trigger temperature.