| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.76 | 4.13 | -0.37 |
| Feb | 3.30 | 3.65 | -0.35 |
| Mar | 4.82 | 5.36 | -0.54 |
| Apr | 4.31 | 4.73 | -0.42 |
| May | 3.52 | 3.62 | -0.10 |
| Jun | 3.73 | 3.97 | -0.24 |
| Jul | 3.15 | 3.24 | -0.09 |
| Aug | 3.71 | 4.02 | -0.31 |
| Sep | 3.94 | 4.05 | -0.11 |
| Oct | 4.67 | 4.84 | -0.17 |
| Nov | 3.96 | 4.30 | -0.34 |
| Dec | 4.69 | 5.16 | -0.47 |
47.56 | 51.07 | -3.51 |