Chilling foods to proper temperatures is one of the best ways to slow the growth of these bacteria. To ensure that your refrigerator is doing its job, itâs important to keep its temperature at 40 Â°F or below; the freezer should be at 0 Â°F.
At the surface, the water can warm up to 68oF. But Lake Tahoe averages around 50oF on the surface for most of the year. Further down, the water temperature remains constant at 39oF. At the surface, the water can warm up to 68oF. But Lake Tahoe averages around 50oF on the surface for most of the year.
A: The temperature of shallow ground water in the U.S. ranges from 44Â°F in the north central areas to approximately 80Â°F in Florida and southern Texas. In North America, geothermal heat pumps can operate efficiently at ground water temperatures as low as 39Â°F, or even lower, with equipment currently being constructed.n the North, where the heating cycle is crucial, ground water temperatures average about 52Â°F. There is less flexibility available in severe northern climates for lowering the ground water temperature before freezing occurs.