| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.38 | 3.57 | -0.19 |
| Feb | 3.26 | 3.37 | -0.11 |
| Mar | 4.13 | 4.41 | -0.28 |
| Apr | 4.02 | 4.09 | -0.07 |
| May | 3.67 | 3.53 | 0.14 |
| Jun | 4.09 | 4.07 | 0.02 |
| Jul | 3.62 | 3.63 | -0.01 |
| Aug | 3.64 | 3.69 | -0.05 |
| Sep | 3.83 | 3.68 | 0.15 |
| Oct | 4.67 | 4.72 | -0.05 |
| Nov | 3.79 | 3.82 | -0.03 |
| Dec | 4.33 | 4.66 | -0.33 |
46.43 | 47.24 | -0.81 |