| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.53 | 3.81 | -0.28 |
| Feb | 2.71 | 3.03 | -0.32 |
| Mar | 3.94 | 4.34 | -0.40 |
| Apr | 3.88 | 4.10 | -0.22 |
| May | 3.78 | 4.02 | -0.24 |
| Jun | 4.57 | 4.82 | -0.25 |
| Jul | 4.18 | 4.46 | -0.28 |
| Aug | 4.45 | 4.74 | -0.29 |
| Sep | 4.46 | 4.78 | -0.32 |
| Oct | 4.51 | 4.89 | -0.38 |
| Nov | 3.61 | 3.86 | -0.25 |
| Dec | 4.11 | 4.55 | -0.44 |
47.73 | 51.40 | -3.67 |