| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.71 | 4.63 | 0.08 |
| Feb | 4.69 | 4.63 | 0.06 |
| Mar | 4.97 | 4.65 | 0.32 |
| Apr | 3.93 | 3.95 | -0.02 |
| May | 3.74 | 3.87 | -0.13 |
| Jun | 4.49 | 4.65 | -0.16 |
| Jul | 4.60 | 4.65 | -0.05 |
| Aug | 4.56 | 4.54 | 0.02 |
| Sep | 4.17 | 3.89 | 0.28 |
| Oct | 3.59 | 3.48 | 0.11 |
| Nov | 4.13 | 4.10 | 0.03 |
| Dec | 4.59 | 4.67 | -0.08 |
52.17 | 51.71 | 0.46 |