| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.81 | 0.91 | -0.10 |
| Feb | 0.84 | 0.91 | -0.07 |
| Mar | 1.65 | 1.72 | -0.07 |
| Apr | 2.92 | 2.99 | -0.07 |
| May | 4.16 | 4.32 | -0.16 |
| Jun | 4.87 | 4.99 | -0.12 |
| Jul | 4.25 | 4.26 | -0.01 |
| Aug | 4.51 | 4.69 | -0.18 |
| Sep | 3.21 | 3.35 | -0.14 |
| Oct | 2.62 | 2.69 | -0.07 |
| Nov | 1.58 | 1.65 | -0.07 |
| Dec | 1.13 | 1.25 | -0.12 |
32.55 | 33.73 | -1.18 |