Asphalt shingles are the leading choice for residential roofing in the United States because they provide quality, durability, versatility and economy. Over 12.5 billion square feet of asphalt shingle products are manufactured annually â enough to cover more than 5 million homes every year.
Much of California has a Mediterranean-like climate with warm, dry summers and mild, wet winters. On the coast, the average daily high temperature hovers around 70Â°F/21Â°C and up), but can occasionally spike to 80Â°F 27Â° C or more on hottest summer days; freezing temperatures are rare, even in winter.
Coolest US Cities in Summer. by Liz Osborn CurrentResults.com. Cool summer temperatures can be found in major cities of the United States on the west coast and in the northeast. Among the country's 51 largest cities, San Francisco tops the list for usually having the coldest weather each day in June, July and August. San Francisco's mean summer temperature is barely above 60 degrees Fahrenheit, whereas most major US cities average at least 70 Â°F (21 Â°C) during summer. These rankings of coldest cities use long-term temperature averages, based on weather data collected from 1981 to 2010 for the NOAA's National Climatic Data Center.