| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.30 | 4.38 | -0.08 |
| Feb | 3.97 | 4.10 | -0.13 |
| Mar | 4.68 | 4.64 | 0.04 |
| Apr | 3.58 | 3.70 | -0.12 |
| May | 3.81 | 3.67 | 0.14 |
| Jun | 4.18 | 4.15 | 0.03 |
| Jul | 3.89 | 3.98 | -0.09 |
| Aug | 4.18 | 4.44 | -0.26 |
| Sep | 3.49 | 3.68 | -0.19 |
| Oct | 3.26 | 3.36 | -0.10 |
| Nov | 3.64 | 3.89 | -0.25 |
| Dec | 4.47 | 4.79 | -0.32 |
47.45 | 48.78 | -1.33 |