'Transformers' Destroys 'Tammy' At The Box Office

Melissa McCarthy's dramedy "Tammy" was no match this weekend for "Transformers: Age of Extinction."

Michael Bay's fourth installment of the robot series may have dropped nearly 64% in its second week at theaters with $36.4 million, but it was still more than enough to beat out the three new films out this weekend.

While McCarthy's "Tammy" didn't outright fizzle at theaters, its $21.2 million debut was significantly lower than the actress' recent films.

"The Heat" and "Identity Thief," both debuted to more than $30 million at theaters in 2013.

"Tammy" will not be a box-office disaster for distributor Warner Bros. McCarthy's first attempt at screenwriting cost an estimated $20 million to make. Over the course of the five-day holiday weekend the film managed to make $35.4 million.

"Transformers: Age of Extinction" has now passed the $500 million mark worldwide making most of its money in China.

The other new releases, horror film "Deliver Us From Evil" and children's sci-fi film "Earth to Echo," made $9.5 million and $8.3 million respectively.

All together, the weekend was one of the slowest July 4 holiday weekends at the box office since 1999, according to BoxOfficeMojo.

The summer season has already been down this year and is on track to be one of the lowest-earning summers in the last decade.

In contrast, last summer a record $4.7 billion dollars was made at theaters. That was due in part to massive hits including billion-dollar film "Iron Man 3" and Universal's "Despicable Me 2."