| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.68 | 4.66 | 0.02 |
| Feb | 4.77 | 4.68 | 0.09 |
| Mar | 4.94 | 4.87 | 0.07 |
| Apr | 3.99 | 4.06 | -0.07 |
| May | 3.32 | 3.33 | -0.01 |
| Jun | 4.56 | 4.35 | 0.21 |
| Jul | 4.72 | 4.78 | -0.06 |
| Aug | 4.34 | 4.32 | 0.02 |
| Sep | 3.84 | 3.73 | 0.11 |
| Oct | 3.37 | 3.40 | -0.03 |
| Nov | 3.94 | 3.91 | 0.03 |
| Dec | 4.79 | 4.72 | 0.07 |
51.26 | 50.81 | 0.45 |