Remember that big heat wave that punished Las Vegas in March? It’s coming back, sort of. It may not be as intense as that historic event but the valley will see its first 100 degree day of the year early next week. “There’s a pretty good chance” the valley will hit the century mark on Monday and Tuesday, said Chris Outler of the National Weather Service as a “big high pressure ridge” moves into the Southwest. He said a “good chunk” of next week will be affected by the ridge, with temperatures well above the May normal of 85 degrees. The heat will start to build Thursday as the valley hits the 90-degree mark for the first time since April 20. Outler said Southern Nevada will reach the upper 90s on Friday and stay there through the weekend before edging up. 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.…