| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.39 | 0.42 | -0.03 |
| Feb | 0.49 | 0.54 | -0.05 |
| Mar | 1.08 | 1.13 | -0.05 |
| Apr | 1.66 | 1.75 | -0.09 |
| May | 2.74 | 2.81 | -0.07 |
| Jun | 2.86 | 2.81 | 0.05 |
| Jul | 3.05 | 3.07 | -0.02 |
| Aug | 2.73 | 2.95 | -0.22 |
| Sep | 1.48 | 1.51 | -0.03 |
| Oct | 1.47 | 1.55 | -0.08 |
| Nov | 0.61 | 0.65 | -0.04 |
| Dec | 0.46 | 0.66 | -0.20 |
19.02 | 19.85 | -0.83 |