| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.41 | 3.63 | -0.22 |
| Feb | 3.31 | 3.53 | -0.22 |
| Mar | 4.35 | 4.68 | -0.33 |
| Apr | 4.10 | 4.25 | -0.15 |
| May | 3.71 | 3.81 | -0.10 |
| Jun | 4.13 | 4.24 | -0.11 |
| Jul | 3.55 | 3.51 | 0.04 |
| Aug | 3.38 | 3.43 | -0.05 |
| Sep | 3.74 | 3.85 | -0.11 |
| Oct | 4.74 | 4.93 | -0.19 |
| Nov | 3.84 | 3.83 | 0.01 |
| Dec | 4.46 | 4.70 | -0.24 |
46.72 | 48.39 | -1.67 |