| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.41 | 0.42 | -0.01 |
| Feb | 0.56 | 0.65 | -0.09 |
| Mar | 1.04 | 0.97 | 0.07 |
| Apr | 2.05 | 2.08 | -0.03 |
| May | 3.11 | 3.03 | 0.08 |
| Jun | 2.96 | 2.83 | 0.13 |
| Jul | 3.33 | 3.45 | -0.12 |
| Aug | 3.07 | 2.90 | 0.17 |
| Sep | 1.67 | 1.62 | 0.05 |
| Oct | 1.64 | 1.57 | 0.07 |
| Nov | 0.77 | 0.75 | 0.02 |
| Dec | 0.61 | 0.57 | 0.04 |
21.22 | 20.84 | 0.38 |