| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.40 | 3.57 | -0.17 |
| Feb | 2.88 | 2.96 | -0.08 |
| Mar | 4.07 | 4.15 | -0.08 |
| Apr | 3.83 | 3.93 | -0.10 |
| May | 3.94 | 4.04 | -0.10 |
| Jun | 4.40 | 4.58 | -0.18 |
| Jul | 4.73 | 4.71 | 0.02 |
| Aug | 4.35 | 4.44 | -0.09 |
| Sep | 4.19 | 4.29 | -0.10 |
| Oct | 4.17 | 4.29 | -0.12 |
| Nov | 3.38 | 3.44 | -0.06 |
| Dec | 4.26 | 4.32 | -0.06 |
47.60 | 48.72 | -1.12 |