Historically, windows were single glazed, with a single pane of glass, but today, there are a number of options for window glazing. Double or triple glazed windows create more insulation, making a structure more energy efficient by reducing heat loss through the windows.
The highest monthly average temperature in Charlotte for August is 79 degrees. The lowest monthly average temperature in Charlotte for January is 44 degrees. The most monthly precipitation in Charlotte occurs in June with 4.9 inches. The air quality index in Charlotte is 15% better than the national average. The pollution index in Charlotte is 171% worse than the national average.
 The average April temperature in North Carolina varies between the  lowest 49 degrees Fahrenheit at Blowin â¦ g Rock to the highest of 63  degrees at Wilmington. State capital Raleigh has an average  temperature of 59 degrees Fahrenheit.orth America includes the US, Canada and Mexico. Average annual income for Canada: $51,951 Average annual income for the US: $49,777 Average annual income for Mexico: e â¦ stimated to be 1/4 to 1/3 of the US average.