| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.75 | 1.92 | -0.17 |
| Feb | 1.77 | 1.82 | -0.05 |
| Mar | 2.31 | 2.26 | 0.05 |
| Apr | 3.74 | 3.78 | -0.04 |
| May | 4.78 | 4.92 | -0.14 |
| Jun | 4.55 | 4.51 | 0.04 |
| Jul | 3.87 | 3.79 | 0.08 |
| Aug | 3.93 | 4.13 | -0.20 |
| Sep | 3.46 | 3.47 | -0.01 |
| Oct | 3.26 | 3.29 | -0.03 |
| Nov | 2.42 | 2.52 | -0.10 |
| Dec | 2.06 | 2.13 | -0.07 |
37.90 | 38.54 | -0.64 |