| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.08 | 4.09 | -0.01 |
| Feb | 4.02 | 4.06 | -0.04 |
| Mar | 4.74 | 4.73 | 0.01 |
| Apr | 4.24 | 4.32 | -0.08 |
| May | 4.78 | 4.76 | 0.02 |
| Jun | 4.10 | 4.20 | -0.10 |
| Jul | 3.15 | 3.17 | -0.02 |
| Aug | 2.81 | 2.82 | -0.01 |
| Sep | 3.45 | 3.52 | -0.07 |
| Oct | 4.53 | 4.52 | 0.01 |
| Nov | 3.91 | 3.82 | 0.09 |
| Dec | 4.52 | 4.69 | -0.17 |
48.33 | 48.70 | -0.37 |