| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.72 | 4.67 | 0.05 |
| Feb | 4.69 | 4.73 | -0.04 |
| Mar | 4.84 | 4.78 | 0.06 |
| Apr | 3.94 | 4.05 | -0.11 |
| May | 3.64 | 3.71 | -0.07 |
| Jun | 4.46 | 4.40 | 0.06 |
| Jul | 4.82 | 4.83 | -0.01 |
| Aug | 4.32 | 4.47 | -0.15 |
| Sep | 3.88 | 4.00 | -0.12 |
| Oct | 3.42 | 3.48 | -0.06 |
| Nov | 3.99 | 4.14 | -0.15 |
| Dec | 4.62 | 4.69 | -0.07 |
51.34 | 51.95 | -0.61 |