1989 Monthly Box Office
Wide releases are those released in at least 600 theaters.
| Month | Cumulative Gross | % of Year | Releases | Average | Average Drop | #1 Release | Gross | % of Total |
|---|---|---|---|---|---|---|---|---|
| December | $336,988,086 | 9.2% | 9 | $37,443,120 | -33.5% | The War of the Roses | $86,888,546 | 25.8% |
| November | $408,848,818 | 11.2% | 10 | $40,884,881 | -11.8% | Back to the Future Part II | $118,811,197 | 29.1% |
| October | $279,249,501 | 7.6% | 11 | $25,386,318 | -23.4% | Look Who's Talking | $140,088,813 | 50.2% |
| September | $133,704,366 | 3.6% | 5 | $26,740,873 | -36% | Sea of Love | $58,571,513 | 43.8% |
| August | $312,890,481 | 8.5% | 11 | $28,444,589 | -40.1% | Parenthood | $100,047,830 | 32% |
| July | $432,947,088 | 11.8% | 9 | $48,105,232 | -36.1% | Lethal Weapon 2 | $147,253,986 | 34% |
| June | $720,284,162 | 19.6% | 9 | $80,031,573 | -41.4% | Batman | $251,188,924 | 34.9% |
| May | $292,215,567 | 8% | 6 | $48,702,594 | -33.2% | Indiana Jones and the Last Crusade | $197,171,806 | 67.5% |
| April | $263,966,336 | 7.2% | 14 | $18,854,738 | -34.7% | Pet Sematary | $57,469,467 | 21.8% |
| March | $180,410,854 | 4.9% | 13 | $13,877,758 | -32.4% | Fletch Lives | $35,150,960 | 19.5% |
| February | $157,558,874 | 4.3% | 7 | $22,508,410 | -36.4% | Bill & Ted's Excellent Adventure | $40,485,039 | 25.7% |
| January | $56,902,105 | 1.6% | 4 | $14,225,526 | -45.8% | Three Fugitives | $40,586,886 | 71.3% |
