The phrase 'Dog Days Of Summer' is used to talk about Hot Sultry Days.
The term evolved to mean the 20 days before and after July 23, or July 3 to August 11, to coincide with Sirius aligned with the sun. I have always associated the term with the last week of July and the first week of August. It is the "highest" season here on Cape Cod. Meaning, peek vacation days to come to Cape Cod.
We, living in New England, wait all winter, and trust me the winters are long for those summer days, beach days, but once they come, we then are waiting for fall, cooler weather, less people and back to school.
New Englanders, more specifically, Massachusetts residents complain about the weather. The long, cold winters, raw and rainy springs, hot and humid summers and maybe we are okay with fall. Fall is only a couple months so we all need a break from complaining.
Of course I'm looking forward to fall, and then soon to be complaining about winter. For now, I will enjoy the 'Dog Days Of Summer'