| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.32 | 4.50 | -0.18 |
| Feb | 4.01 | 4.27 | -0.26 |
| Mar | 4.61 | 4.72 | -0.11 |
| Apr | 3.65 | 3.98 | -0.33 |
| May | 3.88 | 3.75 | 0.13 |
| Jun | 4.07 | 3.98 | 0.09 |
| Jul | 3.94 | 3.90 | 0.04 |
| Aug | 4.27 | 4.55 | -0.28 |
| Sep | 3.48 | 3.55 | -0.07 |
| Oct | 3.24 | 3.35 | -0.11 |
| Nov | 3.59 | 4.04 | -0.45 |
| Dec | 4.51 | 4.95 | -0.44 |
47.57 | 49.54 | -1.97 |