| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.85 | 3.87 | -0.02 |
| Feb | 4.48 | 4.41 | 0.07 |
| Mar | 4.61 | 4.75 | -0.14 |
| Apr | 4.91 | 5.03 | -0.12 |
| May | 5.21 | 5.41 | -0.20 |
| Jun | 4.36 | 4.27 | 0.09 |
| Jul | 4.27 | 4.51 | -0.24 |
| Aug | 3.65 | 3.29 | 0.36 |
| Sep | 3.41 | 3.51 | -0.10 |
| Oct | 3.89 | 3.89 | 0.00 |
| Nov | 3.85 | 3.83 | 0.02 |
| Dec | 4.79 | 4.71 | 0.08 |
51.28 | 51.48 | -0.20 |