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.
The 30 Year Average for summer temperature = 69.0. The All-Time Average for summer temperature = 67.6. Records are incomplete for 1903, 1918, 1946, and 1947, and are not included.