| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.34 | 1.32 | 0.02 |
| Feb | 1.49 | 1.43 | 0.06 |
| Mar | 2.18 | 2.11 | 0.07 |
| Apr | 3.81 | 3.84 | -0.03 |
| May | 4.26 | 4.25 | 0.01 |
| Jun | 5.53 | 5.51 | 0.02 |
| Jul | 4.64 | 4.34 | 0.30 |
| Aug | 4.05 | 4.13 | -0.08 |
| Sep | 3.84 | 3.85 | -0.01 |
| Oct | 3.07 | 2.94 | 0.13 |
| Nov | 2.38 | 2.29 | 0.09 |
| Dec | 1.71 | 1.68 | 0.03 |
38.30 | 37.69 | 0.61 |