| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.43 | 3.65 | -0.22 |
| Feb | 2.87 | 3.03 | -0.16 |
| Mar | 3.75 | 3.92 | -0.17 |
| Apr | 3.38 | 3.66 | -0.28 |
| May | 3.80 | 3.84 | -0.04 |
| Jun | 4.41 | 4.44 | -0.03 |
| Jul | 5.49 | 5.41 | 0.08 |
| Aug | 5.25 | 5.51 | -0.26 |
| Sep | 5.02 | 4.97 | 0.05 |
| Oct | 3.90 | 4.25 | -0.35 |
| Nov | 3.06 | 3.42 | -0.36 |
| Dec | 3.26 | 3.62 | -0.36 |
47.62 | 49.72 | -2.10 |