Updated: Temps this weekend will hit triple digits in Kingman

The expected highs in the region on Friday and Saturday will likely exceed the temperatures on this map, which was created before the excessive heat advisory was upgraded. (Courtesy/National Weather Service)

The expected highs in the region on Friday and Saturday will likely exceed the temperatures on this map, which was created before the excessive heat advisory was upgraded. (Courtesy/National Weather Service)

KINGMAN - The first 100-plus-degree day of 2016 is expected to arrive Friday in Kingman and last through Sunday, with temperatures spiking to between 103 to 106 degrees.

The National Weather Service's Las Vegas office on Monday upgraded a heat advisory to a heat warning as high pressure continues to build over the week. The change could bring near-record highs with temperatures in Las Vegas hitting 110 degrees, the Colorado River Valley, including Bullhead City and Lake Havasu City, topping 115 and Death Valley even hotter at 116 to 120 degrees.

The initial forecast that was issued early Monday called for high temps Friday and Saturday, but that changed later to include Sunday, with Saturday being the hottest of the three days.

A relatively cool May - especially the second half of the month - could leave a portion of the population at high risk or otherwise unprepared for the spike in temperature, especially for those who are sensitive to heat or those without effective cooling, according to the National Weather Service.

Heat-related illnesses, such as heat exhaustion and heat stroke, "will be likely," according to the service, which reminded folks to drink lots of water, wear lightweight, light-colored clothing, work outdoors early in the morning or late in the evening, and never leave children or pets in cars.