| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.66 | 3.98 | -0.32 |
| Feb | 3.01 | 3.49 | -0.48 |
| Mar | 4.32 | 4.79 | -0.47 |
| Apr | 4.25 | 4.61 | -0.36 |
| May | 3.68 | 3.81 | -0.13 |
| Jun | 4.08 | 4.19 | -0.11 |
| Jul | 3.40 | 3.66 | -0.26 |
| Aug | 3.88 | 4.28 | -0.40 |
| Sep | 4.18 | 4.54 | -0.36 |
| Oct | 4.74 | 4.78 | -0.04 |
| Nov | 3.92 | 4.09 | -0.17 |
| Dec | 4.43 | 4.90 | -0.47 |
47.55 | 51.12 | -3.57 |