| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.78 | 0.88 | -0.10 |
| Feb | 0.70 | 0.80 | -0.10 |
| Mar | 1.04 | 1.10 | -0.06 |
| Apr | 1.82 | 1.93 | -0.11 |
| May | 2.92 | 2.97 | -0.05 |
| Jun | 4.24 | 4.26 | -0.02 |
| Jul | 3.79 | 3.94 | -0.15 |
| Aug | 3.39 | 3.28 | 0.11 |
| Sep | 3.47 | 3.49 | -0.02 |
| Oct | 2.55 | 2.67 | -0.12 |
| Nov | 1.41 | 1.44 | -0.03 |
| Dec | 0.96 | 1.14 | -0.18 |
27.07 | 27.90 | -0.83 |