| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.67 | 4.77 | -0.10 |
| Feb | 4.71 | 4.80 | -0.09 |
| Mar | 4.85 | 4.91 | -0.06 |
| Apr | 3.99 | 4.17 | -0.18 |
| May | 3.56 | 3.51 | 0.05 |
| Jun | 4.46 | 4.33 | 0.13 |
| Jul | 4.84 | 4.87 | -0.03 |
| Aug | 4.28 | 4.31 | -0.03 |
| Sep | 3.71 | 3.77 | -0.06 |
| Oct | 3.36 | 3.45 | -0.09 |
| Nov | 4.00 | 4.06 | -0.06 |
| Dec | 4.69 | 4.78 | -0.09 |
51.12 | 51.73 | -0.61 |