Mother’s Day weekend saw temperatures around 100 degrees in Las Vegas. It’s going to be hotter than that as the workweek begins.
The forecast high for today and Tuesday is 103, which may break daily heat records, said Sam Meltzer of the National Weather Service. Monday’s heat record is 103 (set in 1960) and Tuesday’s record is 104 (set in 1996).
The heat wave that began Thursday is expected to intensify during the next two days before a cooling trend arrives Wednesday. It hit 100 degrees for the first time in 2026 in Las Vegas on Friday.
On Thursday, Harry Reid International Airport hit 92, about 10 degrees short of the daily record. It was the second time Reid has reached 90 this month (it saw 91 on May 3). The average early May temperature is 85 degrees.
Last year, Las Vegas hit 100 for the first time on May 21. The average date of hitting 100 is May 24. In 2024, the valley hit 100 on May 17. The earliest Las Vegas has hit 100 was May 1, 1947. The latest was June 30, 2023.
Reaching the century mark is an unofficial start to the summer heat in the valley.
2026 heat and rain
— The warmest day in April happened on the 8th, when Reid hit 91 degrees.
— Reid reached a record 98 degrees on March 25, the hottest day in March history.
— The valley saw 90 for the first time in 2026 on March 18 when Reid recorded a record 94, starting a streak of 12 days of 90 or above.
— Las Vegas reached 80 for the first time this year on Feb. 26. Reid hit 83 that day.
— The last time Reid saw measurable rain was the week of Feb. 18, when it recorded 0.24 inches. That was the first time the airport had seen rain since Jan. 8 (0.03 inches).
— The month of April felt relatively cool (only 1.3 degrees above normal) after a record-breaking March. February 2026 was the second-warmest February in the valley since record-keeping began in 1937. January 2026 was the fifth-warmest January on record.
Contact Mark Davis at mdavis@reviewjournal.com.
