| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.68 | 4.26 | -0.58 |
| Feb | 3.32 | 4.06 | -0.74 |
| Mar | 4.18 | 4.64 | -0.46 |
| Apr | 4.13 | 4.53 | -0.40 |
| May | 5.17 | 5.18 | -0.01 |
| Jun | 4.73 | 5.01 | -0.28 |
| Jul | 4.46 | 4.93 | -0.47 |
| Aug | 4.20 | 4.02 | 0.18 |
| Sep | 3.79 | 3.82 | -0.03 |
| Oct | 3.39 | 3.46 | -0.07 |
| Nov | 3.04 | 3.51 | -0.47 |
| Dec | 3.83 | 4.35 | -0.52 |
47.92 | 51.77 | -3.85 |