Song: "Wonderful Tonight"
Artist: Eric Clapton
Peak position on the Cashbox Singles chart: #24
Number of weeks on the Cashbox Singles chart: 14
(13 weeks in the Top 100)
Weekly data:
| Week ending | Rank | Title | Artist | Label |
|---|---|---|---|---|
| May 6, 1978 | 104 | Wonderful Tonight | Eric Clapton | RSO 895 |
| May 13, 1978 | 76 | Wonderful Tonight | Eric Clapton | RSO 895 |
| May 20, 1978 | 64 | Wonderful Tonight | Eric Clapton | RSO 895 |
| May 27, 1978 | 55 | Wonderful Tonight | Eric Clapton | RSO 895 |
| June 3, 1978 | 47 | Wonderful Tonight | Eric Clapton | RSO 895 |
| June 10, 1978 | 41 | Wonderful Tonight | Eric Clapton | RSO 895 |
| June 17, 1978 | 33 | Wonderful Tonight | Eric Clapton | RSO 895 |
| June 24, 1978 | 29 | Wonderful Tonight | Eric Clapton | RSO 895 |
| July 1, 1978 | 26 | Wonderful Tonight | Eric Clapton | RSO 895 |
| July 8, 1978 | 24 | Wonderful Tonight | Eric Clapton | RSO 895 |
| July 15, 1978 | 24 | Wonderful Tonight | Eric Clapton | RSO 895 |
| July 22, 1978 | 37 | Wonderful Tonight | Eric Clapton | RSO 895 |
| July 29, 1978 | 46 | Wonderful Tonight | Eric Clapton | RSO 895 |
| August 5, 1978 | 56 | Wonderful Tonight | Eric Clapton | RSO 895 |
Rankings greater than 100 are from the Cashbox 'Looking Ahead' charts.