| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.39 | 3.44 | -0.05 |
| Feb | 3.11 | 3.10 | 0.01 |
| Mar | 3.62 | 3.60 | 0.02 |
| Apr | 3.85 | 3.82 | 0.03 |
| May | 3.64 | 3.88 | -0.24 |
| Jun | 4.52 | 4.68 | -0.16 |
| Jul | 4.28 | 4.26 | 0.02 |
| Aug | 4.32 | 4.46 | -0.14 |
| Sep | 4.21 | 4.38 | -0.17 |
| Oct | 4.77 | 5.09 | -0.32 |
| Nov | 3.53 | 3.72 | -0.19 |
| Dec | 4.30 | 4.38 | -0.08 |
47.54 | 48.81 | -1.27 |