| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.72 | 3.71 | 0.01 |
| Feb | 3.30 | 3.20 | 0.10 |
| Mar | 4.03 | 3.94 | 0.09 |
| Apr | 3.65 | 3.68 | -0.03 |
| May | 4.07 | 4.11 | -0.04 |
| Jun | 4.73 | 4.67 | 0.06 |
| Jul | 5.66 | 5.58 | 0.08 |
| Aug | 5.90 | 5.73 | 0.17 |
| Sep | 6.70 | 6.51 | 0.19 |
| Oct | 3.58 | 3.63 | -0.05 |
| Nov | 3.28 | 3.32 | -0.04 |
| Dec | 3.49 | 3.41 | 0.08 |
52.11 | 51.49 | 0.62 |