| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.76 | 4.89 | -0.13 |
| Feb | 4.83 | 4.94 | -0.11 |
| Mar | 4.90 | 5.15 | -0.25 |
| Apr | 4.17 | 4.33 | -0.16 |
| May | 3.86 | 3.99 | -0.13 |
| Jun | 4.15 | 4.17 | -0.02 |
| Jul | 4.79 | 4.72 | 0.07 |
| Aug | 3.91 | 4.03 | -0.12 |
| Sep | 3.84 | 4.14 | -0.30 |
| Oct | 3.38 | 3.42 | -0.04 |
| Nov | 4.15 | 4.29 | -0.14 |
| Dec | 4.65 | 4.77 | -0.12 |
51.39 | 52.84 | -1.45 |