| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.35 | 3.46 | -0.11 |
| Feb | 3.15 | 3.07 | 0.08 |
| Mar | 4.19 | 4.09 | 0.10 |
| Apr | 4.82 | 4.84 | -0.02 |
| May | 5.15 | 5.13 | 0.02 |
| Jun | 4.84 | 4.81 | 0.03 |
| Jul | 4.40 | 4.19 | 0.21 |
| Aug | 3.47 | 3.37 | 0.10 |
| Sep | 3.31 | 3.34 | -0.03 |
| Oct | 3.39 | 3.38 | 0.01 |
| Nov | 3.37 | 3.36 | 0.01 |
| Dec | 3.87 | 3.85 | 0.02 |
47.31 | 46.89 | 0.42 |