| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.76 | 3.87 | -0.11 |
| Feb | 3.33 | 3.42 | -0.09 |
| Mar | 4.32 | 4.55 | -0.23 |
| Apr | 4.26 | 4.27 | -0.01 |
| May | 4.02 | 4.13 | -0.11 |
| Jun | 4.71 | 4.81 | -0.10 |
| Jul | 4.38 | 4.35 | 0.03 |
| Aug | 4.57 | 4.76 | -0.19 |
| Sep | 4.84 | 5.02 | -0.18 |
| Oct | 5.37 | 5.47 | -0.10 |
| Nov | 4.01 | 4.13 | -0.12 |
| Dec | 4.71 | 4.97 | -0.26 |
52.28 | 53.75 | -1.47 |