| Week | Rank | Rate | Record | SOS | Opponent | Score | Rank Then | Rank Now |
| 1 | 40 | 0.000 | (0,0) | 0.000 | --bye-- |
| 2 | 424 | -0.500 | (0,1) | 0.500 | Oregon | 7 to 81 | 29 | 6 |
| 3 | 526 | -0.500 | (0,2) | 0.500 | Wyoming | 17 to 31 | 370 | 33 |
| 4 | 166 | 0.975 | (1,2) | 1.309 | North American U | 91 to 0 | 476 | 701 |
| 5 | 142 | 1.038 | (2,2) | 1.038 | Cal Poly SLO | 59 to 21 | 324 | 304 |
| 6 | 159 | 0.866 | (2,3) | 1.066 | Montana St | 22 to 38 | 76 | 97 |
| 7 | 157 | 0.856 | (2,3) | 1.056 | --bye-- |
| 8 | 145 | 0.934 | (3,3) | 0.934 | Northern Arizona | 45 to 21 | 176 | 152 |
| 9 | 176 | 0.706 | (3,4) | 0.849 | Idaho St | 24 to 38 | 164 | 246 |
| 10 | 152 | 0.852 | (4,4) | 0.852 | Eastern Washington | 47 to 35 | 194 | 211 |
| 11 | 195 | 0.688 | (4,5) | 0.799 | UC-Davis | 23 to 37 | 150 | 119 |
| 12 | 206 | 0.647 | (4,6) | 0.847 | Montana | 10 to 34 | 69 | 43 |
| 13 | 205 | 0.651 | (5,6) | 0.742 | Northern Colorado | 27 to 23 | 430 | 401 |
| 14 | 191 | 0.725 | (5,6) | 0.816 | --bye-- |
| 15 | 197 | 0.638 | (5,6) | 0.729 | --bye-- |
| 16 | 200 | 0.634 | (5,6) | 0.725 | --bye-- |
| 17 | 192 | 0.632 | (5,6) | 0.723 | --bye-- |
| 18 | 191 | 0.632 | (5,6) | 0.723 | --bye-- |
| 19 | | | | | --bye-- |
| 20 | | | | | --bye-- |