| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.35 | 4.54 | -0.19 |
| Feb | 2.81 | 3.03 | -0.22 |
| Mar | 3.17 | 3.28 | -0.11 |
| Apr | 3.48 | 4.03 | -0.55 |
| May | 4.37 | 4.47 | -0.10 |
| Jun | 5.31 | 5.52 | -0.21 |
| Jul | 4.29 | 4.31 | -0.02 |
| Aug | 5.24 | 5.68 | -0.44 |
| Sep | 6.27 | 6.49 | -0.22 |
| Oct | 5.13 | 5.17 | -0.04 |
| Nov | 4.06 | 4.62 | -0.56 |
| Dec | 4.27 | 4.45 | -0.18 |
52.75 | 55.59 | -2.84 |