| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.39 | 3.47 | -0.08 |
| Feb | 3.11 | 3.12 | -0.01 |
| Mar | 3.62 | 3.63 | -0.01 |
| Apr | 3.85 | 3.85 | 0.00 |
| May | 3.64 | 3.89 | -0.25 |
| Jun | 4.52 | 4.62 | -0.10 |
| Jul | 4.28 | 4.27 | 0.01 |
| Aug | 4.32 | 4.40 | -0.08 |
| Sep | 4.21 | 4.33 | -0.12 |
| Oct | 4.77 | 5.11 | -0.34 |
| Nov | 3.53 | 3.74 | -0.21 |
| Dec | 4.30 | 4.41 | -0.11 |
47.54 | 48.84 | -1.30 |