Our gas company measures how cold the weather is in Illinois by "degree days". This predicts how much natural gas a home will need depending on how cold it is. It also compares year-to-year, since gas usage varies not only by gas price, but by how cold it is each winter.
A degree day is defined as 65 degrees - (high temp for day + cold temp for day / 2)
SO the colder the average temp for the day, below 65F, the more gas one house uses. Winter months in Illinois over the past 3 years have varied from 900 degree days per month to 1400. I'm thinking our especially cold December in Illinois will be close to a record.
Anyone else out there measure how cold it is each month, to estimate what you WOULD have spent on natural gas or heating oil if you weren't burning wood? How do you measure cold?
A degree day is defined as 65 degrees - (high temp for day + cold temp for day / 2)
SO the colder the average temp for the day, below 65F, the more gas one house uses. Winter months in Illinois over the past 3 years have varied from 900 degree days per month to 1400. I'm thinking our especially cold December in Illinois will be close to a record.
Anyone else out there measure how cold it is each month, to estimate what you WOULD have spent on natural gas or heating oil if you weren't burning wood? How do you measure cold?