This question is mostly asked by newbie bloggers but I will give you an expert answer that will settle you.
Let’s say you just registered a blog now and you are lucky to get 100 visitors, then it is good.
However, I don’t encourage bloggers to settle for less.
Keep increasing your backlink count each and every passing days and ensure you write articles that has value and network with other bloggers.
With this in mind, you will grow your traffic.
In conclusion, 100 visitors per day is good for a new blog of few days but after that, it is expected to see an increase.
If the above didn’t happen on time, it is time you change your strategy and learn more about Search Engine Optimization.