| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.43 | 4.67 | -0.24 |
| Feb | 4.18 | 4.29 | -0.11 |
| Mar | 4.57 | 4.66 | -0.09 |
| Apr | 3.71 | 3.98 | -0.27 |
| May | 3.71 | 3.81 | -0.10 |
| Jun | 4.12 | 4.17 | -0.05 |
| Jul | 4.10 | 4.07 | 0.03 |
| Aug | 4.39 | 4.79 | -0.40 |
| Sep | 3.72 | 3.89 | -0.17 |
| Oct | 3.40 | 3.61 | -0.21 |
| Nov | 3.67 | 3.91 | -0.24 |
| Dec | 4.62 | 4.95 | -0.33 |
48.62 | 50.80 | -2.18 |