| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.39 | 3.56 | -0.17 |
| Feb | 3.33 | 3.53 | -0.20 |
| Mar | 4.41 | 4.60 | -0.19 |
| Apr | 4.19 | 4.36 | -0.17 |
| May | 3.81 | 4.01 | -0.20 |
| Jun | 4.15 | 4.38 | -0.23 |
| Jul | 3.58 | 3.60 | -0.02 |
| Aug | 3.43 | 3.58 | -0.15 |
| Sep | 3.79 | 3.91 | -0.12 |
| Oct | 4.83 | 4.91 | -0.08 |
| Nov | 3.90 | 3.93 | -0.03 |
| Dec | 4.46 | 4.71 | -0.25 |
47.27 | 49.08 | -1.81 |