January in North Las Vegas is the rainiest and the cloudiest month of the year. In January, the weather in North Las Vegas is typically warm. Average daily high temperature in January is about 10 degrees above zero. On average, North Las Vegas has 16 sunny, 12 partly cloudy, and 3 rainy days in January. The rains are usually light. January as well as July and December is considered the most uncomfortable time to visit North Las Vegas.