| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.78 | 0.90 | -0.12 |
| Feb | 0.82 | 0.90 | -0.08 |
| Mar | 1.62 | 1.71 | -0.09 |
| Apr | 2.91 | 2.99 | -0.08 |
| May | 4.20 | 4.31 | -0.11 |
| Jun | 4.83 | 4.90 | -0.07 |
| Jul | 4.22 | 4.25 | -0.03 |
| Aug | 4.47 | 4.69 | -0.22 |
| Sep | 3.20 | 3.30 | -0.10 |
| Oct | 2.61 | 2.69 | -0.08 |
| Nov | 1.57 | 1.64 | -0.07 |
| Dec | 1.11 | 1.24 | -0.13 |
32.34 | 33.52 | -1.18 |