Domestic Box Office For September 2018
Wide releases are those released in at least 600 theaters.
| Rank | Release | Gross | Max Th | Opening | % of Total | Open Th | Open | Close | Distributor |
|---|---|---|---|---|---|---|---|---|---|
| 1 | The Nun | $117,450,119 | 3,876 | $53,807,379 | 45.8% | 3,876 | Sep 7 | Nov 22 | Warner Bros. |
| 2 | Smallfoot | $83,240,103 | 4,131 | $23,045,635 | 27.7% | 4,131 | Sep 28 | Jan 17 | Warner Bros. |
| 3 | Night School | $77,339,130 | 3,019 | $27,257,615 | 35.2% | 3,010 | Sep 28 | Jan 3 | Universal Pictures |
| 4 | The House with a Clock in Its Walls | $68,549,695 | 3,592 | $26,608,020 | 38.8% | 3,592 | Sep 21 | Jan 3 | Universal Pictures |
| 5 | A Simple Favor | $53,548,586 | 3,102 | $16,011,689 | 29.9% | 3,102 | Sep 14 | Nov 22 | Lionsgate |
| 6 | The Predator | $51,024,708 | 4,070 | $24,632,284 | 48.3% | 4,037 | Sep 14 | Nov 29 | Twentieth Century Fox |
| 7 | Peppermint | $35,418,723 | 2,980 | $13,423,255 | 37.9% | 2,980 | Sep 7 | Nov 1 | STX Entertainment |
| 8 | White Boy Rick | $24,011,188 | 2,504 | $8,860,431 | 36.9% | 2,504 | Sep 14 | Nov 8 | Studio 8 |
| 9 | Hell Fest | $11,107,431 | 2,297 | $5,130,963 | 46.2% | 2,297 | Sep 28 | Nov 8 | Lionsgate |
| 10 | Fahrenheit 11/9 | $6,352,306 | 1,719 | $3,008,563 | 47.4% | 1,719 | Sep 21 | Nov 1 | Briarcliff Entertainment |
| 11 | Unbroken: Path to Redemption | $6,216,897 | 1,620 | $2,238,723 | 36% | 1,620 | Sep 14 | Nov 29 | Pure Flix Entertainment |
| 12 | Life Itself | $4,102,648 | 2,609 | $2,123,463 | 51.8% | 2,609 | Sep 21 | - | Amazon Studios |
| 13 | God Bless the Broken Road | $2,846,257 | 1,272 | $1,386,254 | 48.7% | 1,272 | Sep 7 | Nov 8 | Freestyle Releasing |
| 14 | Assassination Nation | $2,005,142 | 1,403 | $1,050,021 | 52.4% | 1,403 | Sep 21 | Oct 21 | Neon |
| 15 | Moses | $1,807,117 | 697 | $416,047 | 23% | 673 | Sep 13 | - | Fathom Events |
| 16 | Little Women | $1,379,497 | 643 | $705,063 | 51.1% | 643 | Sep 28 | Nov 22 | Pinnacle Peak Pictures |
| 17 | My Neighbor Totoro 2018 Re-release | $1,144,649 | 718 | $539,245 | 47.1% | 718 | Sep 30 | - | Fathom Events |
| 18 | Dragon Ball Z: Broly - The Legendary Super Saiyan | $658,982 | 681 | $357,322 | 54.2% | 681 | Sep 15 | Sep 19 | Fathom Events |
| 19 | The Sound of Music 2018 Re-release | $616,171 | 640 | $413,497 | 67.1% | 640 | Sep 9 | Sep 12 | Fathom Events |
| 20 | Rebel Without a Cause 2018 Re-release | $199,963 | 660 | $116,668 | 58.3% | 658 | Sep 23 | Sep 26 | Fathom Events |
