HOUSTON - The Day For Night music festival ended outdoor performances early because of severe weather that moved into the Houston area Saturday evening.

"It’s December in Houston,” said one festival attendee. “You never know what the weather’s going to be like.”

The rain started falling on the festival shortly after 8 p.m. and then subsided for about half an hour. Then it began to storm again at around 9:30 p.m.

The music festival tweeted Saturday afternoon: "We are carefully monitoring the weather, & have decided to end outdoor music (Red & Green Stages) at 10PM as well as adjust set times accordingly on those stages as a precaution. All artists are still scheduled to perform; please see the revised schedule.Thank you. #DayforNight"

The Green and Red stages shut down at 10 p.m. as storms moved in. The music festival also tweeted a revised set times schedule for both stages.

Parties crowded by the thousands in the rain to watch the final performances but as conditions worsened, the crowds surged into the former Barbara Jordan Post Office.

Many of them continued to enjoy the many elaborate art installations throughout the post office.

Others said they were concerned they would not be able to get to an exit quickly enough if they needed to leave.

KHOU 11 News did not observe any disruptive incidents while the thousands of attendees took shelter inside the building.

This is the second consecutive time the festival has experienced severe weather-related incidents. The Free Press Summer Fest was ultimately evacuated in June due to lightning.

Nonetheless, partiers continue to pay top dollar for tickets and they are still wildly excited to be a part of the festivals. Promoters say Saturday night's estimated attendance was 20,000 people.