dog days of summer

The dog days of summer are the hot, sultry period of summer that typically lasts from early July to early September. The cliche of dog days of summer comes from this period of stagnation and has nothing to do with the animal dogs at all. The dog days of summer date back to the first day that the ancient Romans saw the Dog Star (called Sirius) join the sun in the daytime sky which happened during this time of summer.