| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.77 | 0.91 | -0.14 |
| Feb | 0.79 | 0.90 | -0.11 |
| Mar | 1.59 | 1.70 | -0.11 |
| Apr | 2.88 | 3.02 | -0.14 |
| May | 4.16 | 4.31 | -0.15 |
| Jun | 4.76 | 4.89 | -0.13 |
| Jul | 4.15 | 4.27 | -0.12 |
| Aug | 4.46 | 4.70 | -0.24 |
| Sep | 3.19 | 3.29 | -0.10 |
| Oct | 2.59 | 2.71 | -0.12 |
| Nov | 1.56 | 1.65 | -0.09 |
| Dec | 1.07 | 1.24 | -0.17 |
31.97 | 33.59 | -1.62 |