| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.77 | 0.92 | -0.15 |
| Feb | 0.82 | 0.91 | -0.09 |
| Mar | 1.62 | 1.63 | -0.01 |
| Apr | 2.86 | 3.08 | -0.22 |
| May | 4.17 | 4.27 | -0.10 |
| Jun | 4.70 | 4.91 | -0.21 |
| Jul | 4.14 | 4.24 | -0.10 |
| Aug | 4.52 | 4.47 | 0.05 |
| Sep | 3.35 | 3.39 | -0.04 |
| Oct | 2.84 | 2.96 | -0.12 |
| Nov | 1.66 | 1.71 | -0.05 |
| Dec | 1.14 | 1.26 | -0.12 |
32.59 | 33.75 | -1.16 |