If temperatures drop below freezing for a very short period of time, damage to tender plants is typically minimal. If the same temperature is reached but maintained for several hours, freeze damage to plants is more severe.
Salt Lake City makes up a very small portion of the Salt Lake Valley. With Salt Lake County covering 756 square miles, Salt Lake City covers only 90.5 square miles. Salt Lake City is the largest city in the state with a population of 181,743. Salt Lake County's population is 1.3 million, making it the most populous region in Utah. Overall, Utah is expected to continue to have the youngest population in the nation.
In most years, Salt Lake City averages a daily maximum temperature for December that's between 34 and 42 degrees Fahrenheit (1 to 5 degrees Celsius). The minimum temperature usually falls between 19 and 26 Â°F (-7 to -3 Â°C). The days at Salt Lake City continue to cool down during December.