| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.86 | 4.09 | -0.23 |
| Feb | 3.30 | 3.69 | -0.39 |
| Mar | 4.39 | 4.65 | -0.26 |
| Apr | 4.05 | 4.12 | -0.07 |
| May | 3.17 | 3.30 | -0.13 |
| Jun | 3.35 | 3.40 | -0.05 |
| Jul | 2.55 | 2.75 | -0.20 |
| Aug | 3.41 | 3.35 | 0.06 |
| Sep | 3.82 | 3.92 | -0.10 |
| Oct | 4.42 | 4.52 | -0.10 |
| Nov | 4.06 | 4.04 | 0.02 |
| Dec | 4.68 | 4.98 | -0.30 |
45.06 | 46.81 | -1.75 |