| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.65 | 0.63 | 0.02 |
| Feb | 0.81 | 0.82 | -0.01 |
| Mar | 1.46 | 1.48 | -0.02 |
| Apr | 2.49 | 2.52 | -0.03 |
| May | 4.23 | 4.27 | -0.04 |
| Jun | 3.84 | 4.07 | -0.23 |
| Jul | 4.27 | 4.23 | 0.04 |
| Aug | 3.47 | 3.36 | 0.11 |
| Sep | 2.51 | 2.47 | 0.04 |
| Oct | 1.95 | 1.97 | -0.02 |
| Nov | 1.19 | 1.21 | -0.02 |
| Dec | 0.94 | 0.94 | 0.00 |
27.81 | 27.97 | -0.16 |