The sun rises in the northwest Las Vegas Valley on Wednesday, June, 5, 2019, in Las Vegas. The temperature is expected to reach 100 degrees today for the first time this summer. (Benjamin Hager/Las Vegas Review-Journal) @benjaminhphoto
Beatriz Park of Henderson and her daughter Emilia, 2, cool off as they play in the Surf-A-Rama Wave Pool at Cowabunga Bay Water Park in Henderson on Wednesday, June 5, 2019. (Bizuayehu Tesfaye/Las Vegas Review-Journal) @bizutesfaye
The temperature reached 100 degrees on Wednesday, June 5, 2019, in Las Vegas, for the first time this year. (Benjamin Hager/Las Vegas Review-Journal) @benjaminhphoto
The sun rises over the southwest Las Vegas Valley on Wednesday, June, 5, 2019, in Las Vegas. The temperature reached 100 degrees today for the first time this year. (Benjamin Hager/Las Vegas Review-Journal) @benjaminhphoto
The sun rises in the northwest Las Vegas Valley on Wednesday, June, 5, 2019, in Las Vegas. The temperature reached 100 degrees today for the first time this year. (Benjamin Hager/Las Vegas Review-Journal) @benjaminhphoto
The sun rises in the northwest Las Vegas Valley on Wednesday, June, 5, 2019, in Las Vegas. The temperature reached 100 degrees today for the first time this year. (Benjamin Hager/Las Vegas Review-Journal) @benjaminhphoto
A hot air balloon passes over the southwest Las Vegas Valley on Wednesday, June, 5, 2019, in Las Vegas. The temperature reached 100 degrees today for the first time this year. (Benjamin Hager/Las Vegas Review-Journal) @benjaminhphotoon
A plane leaving from McCarran International Airport passes by the sun on Wednesday, June, 5, 2019, in Las Vegas. The temperature reached 100 degrees today for the first time this year. (Benjamin Hager/Las Vegas Review-Journal) @benjaminhphoto
Traffic is backed up heading north on Las Vegas Boulevard on Wednesday, June 5, 2019, in Las Vegas. The temperature reached 100 degrees today for the first time this year. (Benjamin Hager/Las Vegas Review-Journal) @benjaminhphoto
People cool off as they play in the Surf-A-Rama Wave Pool at Cowabunga Bay Water Park in Henderson on Wednesday, June 5, 2019. (Bizuayehu Tesfaye/Las Vegas Review-Journal) @bizutesfaye
People cool off as they play in the Surf-A-Rama Wave Pool at Cowabunga Bay Water Park in Henderson on Wednesday, June 5, 2019. (Bizuayehu Tesfaye/Las Vegas Review-Journal) @bizutesfaye
Nathaly Swazo of Las Vegas splashes as she rolls down a water slide at Cowabunga Bay Water Park in Henderson on Wednesday, June 5, 2019. (Bizuayehu Tesfaye/Las Vegas Review-Journal) @bizutesfaye
Liberty High School teacher John Cress splashes as he rolls down a water slide at Cowabunga Bay Water Park in Henderson on Wednesday, June 5, 2019. (Bizuayehu Tesfaye/Las Vegas Review-Journal) @bizutesfaye
Alex Gentile of Henderson splashes as she rolls down a water slide at Cowabunga Bay Water Park in Henderson on Wednesday, June 5, 2019. (Bizuayehu Tesfaye/Las Vegas Review-Journal) @bizutesfaye
Beatriz Park of Henderson swims with her daughter Emilia, 2, at the Surf-A-Rama Wave Pool at Cowabunga Bay Water Park in Henderson on Wednesday, June 5, 2019. (Bizuayehu Tesfaye/Las Vegas Review-Journal) @bizutesfaye
Beatriz Park of Henderson and her daughter Emilia, 2, cool off as they play in the Surf-A-Rama Wave Pool at Cowabunga Bay Water Park in Henderson on Wednesday, June 5, 2019. (Bizuayehu Tesfaye/Las Vegas Review-Journal) @bizutesfaye
People enjoy a water slide at Cowabunga Bay Water Park in Henderson on Wednesday, June 5, 2019. (Bizuayehu Tesfaye/Las Vegas Review-Journal) @bizutesfaye
People enjoy a water slide at Cowabunga Bay Water Park in Henderson on Wednesday, June 5, 2019. (Bizuayehu Tesfaye/Las Vegas Review-Journal) @bizutesfaye
Koi fish swim in a pond at the conservatory and botanical gardens at Bellagio in Las Vegas on Wednesday, June 5, 2019. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto
Hotel guests relax by the pool at Park MGM as temperatures reach 100 degrees in the Las Vegas Valley on Wednesday, June 5, 2019. (Chase Stevens/Las Vegas Review-Journal) @csstevensphoto
Emmanuel Worthington, 58, of North Las Vegas walks back home with his Grandchildren, Jaiden Jackson, 5, and Jayvion Jackson, 2, in North Las Vegas, Wednesday, June 5, 2019. The Las Vegas Valley hit 100 degrees for the first time in 2019 on Wednesday afternoon. (Michael Blackshire/Las Vegas Review-Journal)
Jayvion Jackson, 2, right, of North Las Vegas takes a cap from his brother Jaiden, 5, while walking back home with their grandfather Emmanuel Worthington, 58, in North Las Vegas, Wednesday, June 5, 2019. The Las Vegas Valley hit 100 degrees for the first time in 2019 on Wednesday afternoon. (Michael Blackshire/Las Vegas Review-Journal)
Jayvion Jackson, 2, right, of North Las Vegas, tries on sunglasses as his brother Jaiden, 5, looks on while walking back to their home with their grandfather Emmanuel Worthington, 58, in North Las Vegas, Wednesday, June 5, 2019. The Las Vegas Valley hit 100 degrees for the first time in 2019 on Wednesday afternoon. (Michael Blackshire/Las Vegas Review-Journal)
Emmanuel Worthington, 58, of North Las Vegas walks back home with his Grandson, Jaiden Jackson, 5, in North Las Vegas, Wednesday, June 5, 2019. The Las Vegas Valley hit 100 degrees for the first time in 2019 on Wednesday afternoon. (Michael Blackshire/Las Vegas Review-Journal)
The Las Vegas Valley hit 100 degrees for the first time in 2019 on Wednesday afternoon.
The National Weather Service said the mercury at the official weather station at McCarran International Airport recorded triple digits at 1:42 p.m. and topped out at 102 degrees at 3:56 p.m.
Meteorologist Caleb Steele said this year is “on the later side” to start hitting triple digits, but not near a record. The latest the valley has topped 100 for the first time was June 30, 1965, and the earliest was May 1, 1947. The first 100-degree day typically falls on May 26, he said.
According to the weather service, Las Vegas saw the most days of 100-degree or higher temperatures in 1940, with 100 days. The fewest number of 100-degree or higher days was 44 in 1965.
Temperatures should top the century mark Thursday with a forecast high of 101, dipping to an overnight low of 77. High temperatures will slip back into the 90s through the weekend, with forecast highs of 98 on Friday, 94 on Saturday and 97 on Sunday. Overnight lows in the 70s are expected during that time.
The weather service predicts wind gusts of about 25 mph on Thursday afternoon and Friday.
Contact Rachel Spacek at 702-387-2921 or rspacek@reviewjournal.com . Follow @RachelSpacek on Twitter. Review-Journal staff writer Mike Shoro contributed to this report.