| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.41 | 3.59 | -0.18 |
| Feb | 2.84 | 3.02 | -0.18 |
| Mar | 4.05 | 4.14 | -0.09 |
| Apr | 3.87 | 4.09 | -0.22 |
| May | 3.90 | 4.02 | -0.12 |
| Jun | 4.39 | 4.64 | -0.25 |
| Jul | 4.43 | 4.60 | -0.17 |
| Aug | 4.37 | 4.58 | -0.21 |
| Sep | 4.16 | 4.34 | -0.18 |
| Oct | 4.25 | 4.36 | -0.11 |
| Nov | 3.51 | 3.57 | -0.06 |
| Dec | 4.24 | 4.37 | -0.13 |
47.42 | 49.32 | -1.90 |