I love tracking weather and I love statistics, so when I stumbled across a site that easily gave me the actual and average temperature for every day, I was hooked. I created a spreadsheet and over a few months, during lunch breaks and what not, I entered the information and started tracking some information.
Below is a table that shows the variation from the average high temperature (by day) for the total of the year. This is for the closest official weather station to my house, in Oakland County, Michigan.
Essentially, it tracks the mid-year and the end of year. The results are somewhat startling.
|Year||June 30th||December 31st|
To summarize, every year since 2005 (when data was first available to this level), has ended up higher than average.