| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.81 | 4.79 | 0.02 |
| Feb | 5.02 | 5.01 | 0.01 |
| Mar | 5.24 | 5.16 | 0.08 |
| Apr | 4.28 | 4.29 | -0.01 |
| May | 4.06 | 3.93 | 0.13 |
| Jun | 4.65 | 4.75 | -0.10 |
| Jul | 4.69 | 4.59 | 0.10 |
| Aug | 4.16 | 4.24 | -0.08 |
| Sep | 3.73 | 3.27 | 0.46 |
| Oct | 3.02 | 3.00 | 0.02 |
| Nov | 3.85 | 3.80 | 0.05 |
| Dec | 5.20 | 5.11 | 0.09 |
52.71 | 51.94 | 0.77 |