| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.68 | 4.25 | -0.57 |
| Feb | 3.32 | 4.05 | -0.73 |
| Mar | 4.18 | 4.62 | -0.44 |
| Apr | 4.13 | 4.52 | -0.39 |
| May | 5.17 | 5.19 | -0.02 |
| Jun | 4.73 | 5.00 | -0.27 |
| Jul | 4.46 | 4.92 | -0.46 |
| Aug | 4.20 | 4.01 | 0.19 |
| Sep | 3.79 | 3.82 | -0.03 |
| Oct | 3.39 | 3.45 | -0.06 |
| Nov | 3.04 | 3.50 | -0.46 |
| Dec | 3.83 | 4.33 | -0.50 |
47.92 | 51.66 | -3.74 |