| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.79 | 0.90 | -0.11 |
| Feb | 0.83 | 0.90 | -0.07 |
| Mar | 1.63 | 1.71 | -0.08 |
| Apr | 2.94 | 2.98 | -0.04 |
| May | 4.23 | 4.31 | -0.08 |
| Jun | 4.83 | 4.90 | -0.07 |
| Jul | 4.20 | 4.23 | -0.03 |
| Aug | 4.47 | 4.68 | -0.21 |
| Sep | 3.21 | 3.30 | -0.09 |
| Oct | 2.59 | 2.68 | -0.09 |
| Nov | 1.57 | 1.63 | -0.06 |
| Dec | 1.10 | 1.23 | -0.13 |
32.39 | 33.45 | -1.06 |