| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.58 | 0.55 | 0.03 |
| Feb | 0.78 | 0.76 | 0.02 |
| Mar | 1.55 | 1.52 | 0.03 |
| Apr | 2.88 | 2.93 | -0.05 |
| May | 4.03 | 4.15 | -0.12 |
| Jun | 4.10 | 4.17 | -0.07 |
| Jul | 3.04 | 3.25 | -0.21 |
| Aug | 3.54 | 3.87 | -0.33 |
| Sep | 2.53 | 2.57 | -0.04 |
| Oct | 2.32 | 2.34 | -0.02 |
| Nov | 1.19 | 1.17 | 0.02 |
| Dec | 0.81 | 0.84 | -0.03 |
27.35 | 28.12 | -0.77 |