| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.08 | 4.16 | -0.08 |
| Feb | 4.57 | 4.52 | 0.05 |
| Mar | 4.76 | 4.80 | -0.04 |
| Apr | 4.85 | 4.94 | -0.09 |
| May | 4.90 | 5.17 | -0.27 |
| Jun | 4.25 | 4.35 | -0.10 |
| Jul | 4.45 | 4.62 | -0.17 |
| Aug | 3.87 | 3.88 | -0.01 |
| Sep | 3.77 | 3.82 | -0.05 |
| Oct | 3.49 | 3.51 | -0.02 |
| Nov | 3.63 | 3.69 | -0.06 |
| Dec | 4.65 | 4.81 | -0.16 |
51.27 | 52.27 | -1.00 |