| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.84 | 0.92 | -0.08 |
| Feb | 0.82 | 0.91 | -0.09 |
| Mar | 1.62 | 1.71 | -0.09 |
| Apr | 2.86 | 2.96 | -0.10 |
| May | 3.99 | 4.26 | -0.27 |
| Jun | 4.76 | 5.05 | -0.29 |
| Jul | 4.12 | 4.22 | -0.10 |
| Aug | 4.51 | 4.59 | -0.08 |
| Sep | 3.28 | 3.39 | -0.11 |
| Oct | 2.56 | 2.61 | -0.05 |
| Nov | 1.52 | 1.63 | -0.11 |
| Dec | 1.14 | 1.25 | -0.11 |
32.02 | 33.50 | -1.48 |