| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.76 | 3.65 | 0.11 |
| Feb | 3.38 | 3.29 | 0.09 |
| Mar | 4.34 | 4.17 | 0.17 |
| Apr | 4.33 | 4.12 | 0.21 |
| May | 4.01 | 4.06 | -0.05 |
| Jun | 4.74 | 4.78 | -0.04 |
| Jul | 4.44 | 4.41 | 0.03 |
| Aug | 4.57 | 4.54 | 0.03 |
| Sep | 4.80 | 4.85 | -0.05 |
| Oct | 5.40 | 5.36 | 0.04 |
| Nov | 4.06 | 3.94 | 0.12 |
| Dec | 4.71 | 4.68 | 0.03 |
52.54 | 51.85 | 0.69 |