If you’re sitting in front of your computer thinking about how much better it would be if you were in Las Vegas well then you’re probably right. The truth is, it’s always the right time to go but some months are actually better than others. First off, if you’re looking to spend the least amount of money on accommodations then you should consider the summer months. With the blistering heat, hotels usually give away rooms.
During the winter, temperatures have a tendency to drop into the thirties at night but manage to hover around the upper fifties to low sixties during the day. If you’re trying to avoid the winter shoveling of snow, Las Vegas rarely gets any of it.
If you think about the time you spend inside when you’re in Las Vegas then you’ll be quick to realize that it doesn’t make a difference when you hit the tables. Climate control is a science in this desert town and you will rarely be uncomfortable while inside.
Source