| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.51 | 3.48 | 0.03 |
| Feb | 3.08 | 3.02 | 0.06 |
| Mar | 4.05 | 3.94 | 0.11 |
| Apr | 3.32 | 3.35 | -0.03 |
| May | 3.67 | 3.62 | 0.05 |
| Jun | 4.07 | 4.08 | -0.01 |
| Jul | 4.72 | 4.81 | -0.09 |
| Aug | 4.47 | 4.54 | -0.07 |
| Sep | 4.32 | 4.39 | -0.07 |
| Oct | 3.96 | 4.22 | -0.26 |
| Nov | 3.06 | 3.02 | 0.04 |
| Dec | 3.69 | 3.89 | -0.20 |
45.92 | 46.36 | -0.44 |