| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.89 | 0.91 | -0.02 |
| Feb | 0.92 | 0.96 | -0.04 |
| Mar | 1.49 | 1.52 | -0.03 |
| Apr | 2.68 | 2.81 | -0.13 |
| May | 3.62 | 3.69 | -0.07 |
| Jun | 4.10 | 4.20 | -0.10 |
| Jul | 4.21 | 4.66 | -0.45 |
| Aug | 3.92 | 4.05 | -0.13 |
| Sep | 3.53 | 3.65 | -0.12 |
| Oct | 3.15 | 3.26 | -0.11 |
| Nov | 1.70 | 1.77 | -0.07 |
| Dec | 1.31 | 1.31 | 0.00 |
31.52 | 32.79 | -1.27 |