| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.04 | 4.18 | -0.14 |
| Feb | 3.23 | 3.35 | -0.12 |
| Mar | 4.27 | 4.39 | -0.12 |
| Apr | 4.63 | 4.80 | -0.17 |
| May | 4.81 | 4.87 | -0.06 |
| Jun | 4.65 | 4.82 | -0.17 |
| Jul | 4.75 | 4.81 | -0.06 |
| Aug | 5.12 | 5.20 | -0.08 |
| Sep | 4.61 | 4.68 | -0.07 |
| Oct | 3.82 | 3.90 | -0.08 |
| Nov | 3.47 | 3.50 | -0.03 |
| Dec | 4.19 | 4.42 | -0.23 |
51.59 | 52.92 | -1.33 |