Summer watering schedule is in effect for the Las Vegas valley during the months of May, June, July and August. All watering zones have Monday thru Saturday assigned for watering. However, landscape watering is prohibited from 11:00AM to 7:00PM during the summer months, May 1st to August 31st. Sprinkler watering is prohibited on Sundays. Watering with a handheld hose is allowed at any time.
Visit the Las Vegas Valley Water District website for more details.