The average July high temperature is 90.5 degrees. How does that number compare to this year and the last several? I think that most would guess that we were below average this year. And they’d be right. The average high this year was 89.5 degrees. Here’s a list of the average highs the last couple of years: 2007: 88.9 degrees 2006: 93.4 degrees 2005: 91.9 degrees 2004: 85.8 degrees