| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.61 | 3.83 | -0.22 |
| Feb | 3.34 | 3.71 | -0.37 |
| Mar | 4.12 | 4.47 | -0.35 |
| Apr | 4.19 | 4.34 | -0.15 |
| May | 3.64 | 3.63 | 0.01 |
| Jun | 4.21 | 4.34 | -0.13 |
| Jul | 3.28 | 3.35 | -0.07 |
| Aug | 3.19 | 3.22 | -0.03 |
| Sep | 4.05 | 3.92 | 0.13 |
| Oct | 5.05 | 5.17 | -0.12 |
| Nov | 4.46 | 4.51 | -0.05 |
| Dec | 4.44 | 4.84 | -0.40 |
47.58 | 49.33 | -1.75 |