Not only is "It" now the largest ever opening for a horror movie and the largest September opening of all time, the film more than doubled the earnings of the previous record holders. Before this weekend "Paranormal Activity 3" had the biggest horror opening with $52.6 million from 2011, and the highest September debut was "Hotel Transylvania 2's" $48.5 million in 2015.
"We blew past everyone's most optimistic and aggressive projections and I think there might be room for us to grow this weekend even still," said Jeff Goldstein, Warner Bros. president of domestic distribution.
Goldstein said he was conservative with Sunday projections due to the confounding factors of the film's R-rating, the popularity of late night showings, the beginning of football season and Hurricane Irma.
Regardless of whether there is an uptick when final numbers are reported Monday, "It's" success is still astounding, especially considering that the project from director Andy Muschietti cost only $35 million to produce.
RELATED: Mysterious red balloons freak out Pennsylvania town
Red balloons are creeping out a neighborhood
Critics and audiences were on the same page, too. The film has a fresh 86 percent Rotten Tomatoes score, and audiences, 65 percent of whom are over 25 and older, gave "It" a B+ CinemaScore.
Starring Bill Skarsgard as the homicidal clown Pennywise, "It" is the first of a planned two-part series. The second is slated to come out in the third quarter of 2019.
"It starts with a brilliant story from Stephen King," Goldstein said of the stellar performance. "The director made a fabulously compelling movie, our marketing just nailed it and the date was special."
The success of "It" also comes after an under-performing summer movie going season that left the year to date box office down 6.5 percent from last year. Now, with the "It" factor, the year is down only 5.5 percent.
The Associated Press contributed to this report.
Report a typo to the ABC13 staff