| 9/1/2018 | Washington | 16 | vs | Auburn (8-5) | 21 | | Atlanta GA | vs SEC |
| 9/8/2018 | North Dakota (6-5) | 3 | at | Washington | 45 | | | Ind1AA (1AA) |
| 9/15/2018 | Washington | 21 | at | Utah (9-5,6-4) | 7 | | | |
| 9/22/2018 | Arizona State (7-6,5-4) | 20 | at | Washington | 27 | | | |
| 9/29/2018 | BYU (7-6) | 7 | at | Washington | 35 | | | Ind |
| 10/6/2018 | Washington | 31 | at | UCLA (3-9,3-6) | 24 | | | |
| 10/13/2018 | Washington | 27 | at | Oregon (9-4,5-4) | 30 | OT | | |
| 10/20/2018 | Colorado (5-7,2-7) | 13 | at | Washington | 27 | | | |
| 10/27/2018 | Washington | 10 | at | California (7-6,4-5) | 12 | | | |
| 11/3/2018 | Stanford (9-4,6-3) | 23 | at | Washington | 27 | | | |
| 11/17/2018 | Oregon State (2-10,1-8) | 23 | at | Washington | 42 | | | |
| 11/23/2018 | Washington | 28 | at | Washington State (11-2,7-2) | 15 | | | |
| 11/30/2018 | Utah (9-5,6-4) | 3 | vs | Washington | 10 | | Pac 12 Championship Santa Clara CA | |
| 1/1/2019 | Washington | 23 | vs | Ohio State (13-1) | 28 | | ROSE BOWL GAME PRESENTED BY NORTHWESTERN MUTUAL - Pasadena CA | vs B10 |