| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.64 | 0.65 | -0.01 |
| Feb | 0.81 | 0.82 | -0.01 |
| Mar | 1.45 | 1.49 | -0.04 |
| Apr | 2.49 | 2.55 | -0.06 |
| May | 4.35 | 4.49 | -0.14 |
| Jun | 4.04 | 4.12 | -0.08 |
| Jul | 4.25 | 4.23 | 0.02 |
| Aug | 3.34 | 3.39 | -0.05 |
| Sep | 2.52 | 2.53 | -0.01 |
| Oct | 2.06 | 2.04 | 0.02 |
| Nov | 1.21 | 1.22 | -0.01 |
| Dec | 0.89 | 0.94 | -0.05 |
28.05 | 28.47 | -0.42 |