* Degree days are a calculation used to estimate heating and cooling costs. Heating Degree Days is the annual sum of the degrees above 68 for each day's average temperature. Cooling Degree Days is the annual sum of the degrees below 68 for each day's average temperature. How is this meaningful? If there is a predominance of one type of degree day over another; that indicates either a very hot or very cold environment. If both numbers are large, that generally indicates a very variable climate. If both numbers are small, that generally indicates a more consistent climate.
The data here represents the zip codes associated with town name. The listed populations often include areas outside an incorporated municipality. Information provided by Onboard Informatics.
