Extreme heat 10–15 degrees above normal

LAS VEGAS (KLAS) — Temperatures in Southern Nevada are expected to reach triple digits in what could be a record-setting week.

“Temperatures will rise 10 to 15 degrees above normal during the second half of the week, creating a widespread threat of high to extreme heat!” the National Weather Service in Las Vegas posted on social media.

The extreme heat warning begins at 10 a.m. on Wednesday, June 5, and ends at 9 p.m. on Friday, June 7. The heat warning is in effect for the Las Vegas Valley, Lake Mead National Recreation Area and other surrounding areas. The hottest day is expected to be Thursday, June 6, when temperatures are expected to reach 111 degrees in the valley. That would be the earliest day of the year to reach 110 degrees or more.

In addition to Clark County, the heat warning also applies to southern Nye Counties, Owens Valley, San Bernardino, Mohave and Death Valley, where temperatures could reach 49 degrees. Death Valley holds the record for the highest temperature recorded worldwide of 56 degrees on July 10, 1913.

The sweltering temperatures can cause health problems. People are advised to limit time spent outdoors, drink plenty of water and know the warning signs of heat exhaustion or heat stroke, which can include heavy or no sweating, dizziness, muscle cramps, fainting and even vomiting.

Adults over 65, infants and children, and people with health conditions are most affected by the extreme heat.