| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.40 | 4.62 | -0.22 |
| Feb | 3.49 | 3.81 | -0.32 |
| Mar | 4.48 | 4.89 | -0.41 |
| Apr | 4.94 | 5.43 | -0.49 |
| May | 5.11 | 5.40 | -0.29 |
| Jun | 5.16 | 5.56 | -0.40 |
| Jul | 5.29 | 5.81 | -0.52 |
| Aug | 4.84 | 5.08 | -0.24 |
| Sep | 4.87 | 5.23 | -0.36 |
| Oct | 4.06 | 4.17 | -0.11 |
| Nov | 4.03 | 4.30 | -0.27 |
| Dec | 4.15 | 4.56 | -0.41 |
54.82 | 58.86 | -4.04 |