The fertile Salt Lake Valley lies between the Wasatch Mountains on the east and the Oquirrh Mountain Range to the west. The active Wasatch Fault runs through the eastern part of the county. The Jordan River flows north through the valley to the Great Salt Lake, and canyon streams provide culinary and agricultural water.
Salt Lake County is home to 16 incorporated cities ranging in size from nearly 182,000 people to less than 400. Salt Lake County consists of 764 square miles with a population of approximately 910,000 people. There are 15 canyons and 4 world class ski resorts.
January is the coldest month in the city, with an average temperature of 29.1 °F (-1.6 °C). The warmest month is July, with an average temperature of 77.0 °F (25.0 °C). The airport averages 16.50 in (419 mm) of precipitation per year, with bench areas receiving up to 20 inches (500 mm), mostly due to increased snowfall.