| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 2.51 | 2.57 | -0.06 |
| Feb | 2.17 | 2.06 | 0.11 |
| Mar | 3.43 | 3.42 | 0.01 |
| Apr | 4.71 | 4.72 | -0.01 |
| May | 5.01 | 4.96 | 0.05 |
| Jun | 4.41 | 4.46 | -0.05 |
| Jul | 3.87 | 3.88 | -0.01 |
| Aug | 3.49 | 3.45 | 0.04 |
| Sep | 3.32 | 3.15 | 0.17 |
| Oct | 3.16 | 3.07 | 0.09 |
| Nov | 3.39 | 3.43 | -0.04 |
| Dec | 2.63 | 2.65 | -0.02 |
42.10 | 41.82 | 0.28 |