| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.57 | 3.97 | -0.40 |
| Feb | 2.96 | 3.15 | -0.19 |
| Mar | 3.82 | 3.76 | 0.06 |
| Apr | 3.85 | 4.12 | -0.27 |
| May | 4.49 | 4.61 | -0.12 |
| Jun | 4.48 | 4.47 | 0.01 |
| Jul | 3.83 | 4.50 | -0.67 |
| Aug | 3.95 | 3.84 | 0.11 |
| Sep | 4.68 | 5.08 | -0.40 |
| Oct | 3.54 | 3.29 | 0.25 |
| Nov | 3.47 | 3.34 | 0.13 |
| Dec | 3.61 | 3.95 | -0.34 |
46.25 | 48.08 | -1.83 |