Monthly Degree Day Comparison
|Base Year||Comparison Year||Comparison Percentages|
* January daily data will be available on February 1, when the complete month will be posted.
A negative percentage means the Comparison Year was more mild than the Base Year. A positive percentage means the Comparison Year was more severe than the Base Year. When the monthly degree days in either the base year or the comparison year are less than 30, a percentage comparison is not calculated. However, the Annual Total comparison percentages include all heating and cooling degree days.
Cumulative Cooling Degree Days