| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.85 | 4.12 | -0.27 |
| Feb | 3.43 | 3.49 | -0.06 |
| Mar | 4.82 | 5.21 | -0.39 |
| Apr | 4.31 | 4.59 | -0.28 |
| May | 3.44 | 3.41 | 0.03 |
| Jun | 3.76 | 3.93 | -0.17 |
| Jul | 3.21 | 3.22 | -0.01 |
| Aug | 3.71 | 3.76 | -0.05 |
| Sep | 3.94 | 4.03 | -0.09 |
| Oct | 4.56 | 4.61 | -0.05 |
| Nov | 4.11 | 4.25 | -0.14 |
| Dec | 4.70 | 4.92 | -0.22 |
47.84 | 49.54 | -1.70 |