There’s a chance — a slim one — that Lee Daniels’ “The Butler” will blow up next weekend and roll well into the fall, a “Help” sized hit about race and how far American has come, just over the course of one man’s lifetime.

But barring that, or a sudden interest in Ashton Kutcher’s performance as Steve Jobs, THIS will be the last “BIG” weekend of the summer of 2013.

“Planes,” the last cartoon, “Elysium,” the last sci-fi blockbuster, “We’re the Millers,” the last big R-rated comedy.

Will they do blockbuster business, or is animation ennui, fart joke fatigue and sci fi “Seen that” going to chase audiences away?

Box Office Mojo figures “Elysium” will do a very good $34, with “Planes” managing $24, “Percy Jackson” $19 and “Millers” $18.

“Millers” and “Jackson” had very good Wednesdays and decent Thursdays, so they’ll both be in the upper $20s, since Wed., by Midnight Sunday.

The Box Office Guru thinks “Planes” will collect Disney bucks in the $26+ range, and that it’ll best “Elysium” ($25) and “Millers” ($24) and “Percy ($24).