Yellowstone National Park saw a dip in attendance in September. Last month, 640,068 visitors came to the park, but despite that being a 8.79 decrease from last year, it's still the third busiest September on record.

Park officials attribute the decline to many factors: several days of inclement weather, snowy weather, and road closures due to snow, ice, and avalanche danger.

Overall, this year the park has hosted 3,872,776 visits. That total is down 2.47 percent from the same period in 2016 which was highest on record. Year to date, visitation at Yellowstone National Park is nearly 20% higher than it was five years ago.

As Yellowstone transitions from fall to winter now is a great time to see all kinds of animals like buffalo, elk, bear, and birds.