| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.66 | 4.62 | 0.04 |
| Feb | 4.71 | 4.65 | 0.06 |
| Mar | 4.90 | 4.83 | 0.07 |
| Apr | 3.92 | 3.99 | -0.07 |
| May | 3.36 | 3.37 | -0.01 |
| Jun | 4.52 | 4.39 | 0.13 |
| Jul | 4.67 | 4.72 | -0.05 |
| Aug | 4.40 | 4.36 | 0.04 |
| Sep | 3.84 | 3.82 | 0.02 |
| Oct | 3.41 | 3.39 | 0.02 |
| Nov | 3.93 | 3.91 | 0.02 |
| Dec | 4.69 | 4.68 | 0.01 |
51.01 | 50.73 | 0.28 |