Answer: Daily watering isn't recommended, even it hot weather. Your goal is to water deeply but infrequently to encourage deep rooting so your lawn will be less susceptible to drought and heat. One inch of water per week is usually all a lawn needs. You can water twice a week when it's really hot, but once a week will usually suffice. The browning areas can be the result of cool season grasses dying out in the heat (they will green up when the temperatures cool off), dog urine, insect problems or diseases (from overwatering). I can't diagnose the problem without seeing it so I can only suggest you visit a Master Gardener clinic or cooperative extension office with a sample of the dead lawn. They can do some microscopic inspection and at least rule out common causes. In the meantime, water your lawn deeply and plan on feeding it in September or October when the weather cools down a bit. It should green up in November and December. If you keep it on a regular feeding and watering schedule it should regain its health. If the brown spots persist, dig them out (this fall) and reseed the bare areas. Best wishes with your lawn!
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