The average high temperature in Las Vegas in January is 58 degrees Fahrenheit; the average low is 34 degrees Fahrenheit. Average precipitation for Las Vegas in January is 0.50 inches. On average, January is the wettest month in Las Vegas.
The coldest day ever recorded in Las Vegas, Nev., was on Jan. 13, 1963; the temperature dropped to just 8 degrees Fahrenheit. On Jan. 4 and Jan. 5 of 1974, Las Vegas recorded a record high of 9 inches of snowfall. January is the coldest month in Las Vegas; however, visitors are still able to find attractions to keep them busy indoors and outdoors.