| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.38 | 0.40 | -0.02 |
| Feb | 0.48 | 0.54 | -0.06 |
| Mar | 1.06 | 1.09 | -0.03 |
| Apr | 1.62 | 1.75 | -0.13 |
| May | 2.64 | 2.81 | -0.17 |
| Jun | 2.85 | 2.82 | 0.03 |
| Jul | 3.08 | 3.17 | -0.09 |
| Aug | 2.73 | 2.94 | -0.21 |
| Sep | 1.43 | 1.53 | -0.10 |
| Oct | 1.48 | 1.55 | -0.07 |
| Nov | 0.60 | 0.62 | -0.02 |
| Dec | 0.45 | 0.63 | -0.18 |
18.80 | 19.85 | -1.05 |