It was a record high yesterday, May 6th, 2018, here in Phoenix. This means summer is upon us. It also means that you should be setting your pop up sprinkler heads for 20 minutes at least 5 times per week. If your lawn has not started greening up at this point or if your winter lawn is finally transitioning to summer grass, you may need to double that watering time for at least 2 weeks to get the turf to flourish.
See our recommended watering schedule for all desert landscaping and plants throughout the year:
https://azlawns.com/resources/water-recommendation/