| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.79 | 4.89 | -0.10 |
| Feb | 4.77 | 4.79 | -0.02 |
| Mar | 4.99 | 5.02 | -0.03 |
| Apr | 4.26 | 4.35 | -0.09 |
| May | 3.85 | 3.94 | -0.09 |
| Jun | 4.16 | 4.05 | 0.11 |
| Jul | 4.52 | 4.59 | -0.07 |
| Aug | 4.06 | 4.15 | -0.09 |
| Sep | 3.86 | 3.92 | -0.06 |
| Oct | 3.35 | 3.45 | -0.10 |
| Nov | 4.11 | 4.19 | -0.08 |
| Dec | 4.72 | 4.82 | -0.10 |
51.44 | 52.16 | -0.72 |