The Zodiac constellations are associated with different months because as the Earth revolves around the Sun, the Sun blocks the Earth's view of the constellation associated with that month.

For example, my birthday is September 17. I am a Virgo. The reason I am a Virgo is because the Sun blocks Virgo during September. In October, the Earth's orbit makes the Sun block another constellation and Virgo can be seen again.

In summary, the Earth's orbit makes different constellations and their stars visible through the year. So there are seasonal constellations.